./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P --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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:02:47,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:02:47,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:02:47,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:02:47,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:02:47,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:02:47,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:02:47,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:02:47,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:02:47,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:02:47,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:02:47,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:02:47,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:02:47,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:02:47,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:02:47,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:02:47,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:02:47,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:02:47,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:02:47,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:02:47,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:02:47,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:02:47,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:02:47,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:02:47,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:02:47,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:02:47,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:02:47,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:02:47,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:02:47,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:02:47,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:02:47,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:02:47,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:02:47,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:02:47,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:02:47,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:02:47,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:02:47,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:02:47,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:02:47,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:02:47,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:02:47,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 00:02:47,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:02:47,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:02:47,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:02:47,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:02:47,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:02:47,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:02:47,900 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:02:47,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:02:47,901 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:02:47,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:02:47,901 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:02:47,901 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:02:47,902 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:02:47,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:02:47,902 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:02:47,902 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:02:47,903 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:02:47,903 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:02:47,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:02:47,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:02:47,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:02:47,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:02:47,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:02:47,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:02:47,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:02:47,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:02:47,905 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:02:47,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:02:47,906 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:02:47,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:02:47,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:02:47,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:02:47,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:02:47,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:02:47,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:02:47,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:02:47,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:02:47,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:02:47,908 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:02:47,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:02:47,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:02:47,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:02:47,909 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_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-11-21 00:02:48,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:02:48,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:02:48,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:02:48,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:02:48,260 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:02:48,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-21 00:02:48,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/fd1fd89e8/223083ba80b84d5eb6099bf259336845/FLAGc71720bdc [2021-11-21 00:02:49,218 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:02:49,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-21 00:02:49,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/fd1fd89e8/223083ba80b84d5eb6099bf259336845/FLAGc71720bdc [2021-11-21 00:02:49,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/fd1fd89e8/223083ba80b84d5eb6099bf259336845 [2021-11-21 00:02:49,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:02:49,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:02:49,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:02:49,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:02:49,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:02:49,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:02:49" (1/1) ... [2021-11-21 00:02:49,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3f6345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:49, skipping insertion in model container [2021-11-21 00:02:49,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:02:49" (1/1) ... [2021-11-21 00:02:49,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:02:49,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:02:50,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-21 00:02:50,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:02:50,443 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) [2021-11-21 00:02:50,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c81f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:50, skipping insertion in model container [2021-11-21 00:02:50,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:02:50,460 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 00:02:50,462 INFO L158 Benchmark]: Toolchain (without parser) took 1115.87ms. Allocated memory is still 111.1MB. Free memory was 69.7MB in the beginning and 65.5MB in the end (delta: 4.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-21 00:02:50,463 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 111.1MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:02:50,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1110.91ms. Allocated memory is still 111.1MB. Free memory was 69.6MB in the beginning and 65.5MB in the end (delta: 4.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-21 00:02:50,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 111.1MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1110.91ms. Allocated memory is still 111.1MB. Free memory was 69.6MB in the beginning and 65.5MB in the end (delta: 4.0MB). Peak memory consumption was 8.8MB. 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_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P --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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:02:53,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:02:53,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:02:53,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:02:53,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:02:53,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:02:53,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:02:53,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:02:53,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:02:53,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:02:53,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:02:53,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:02:53,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:02:53,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:02:53,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:02:53,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:02:53,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:02:53,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:02:53,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:02:53,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:02:53,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:02:53,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:02:53,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:02:53,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:02:53,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:02:53,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:02:53,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:02:53,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:02:53,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:02:53,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:02:53,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:02:53,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:02:53,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:02:53,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:02:53,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:02:53,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:02:53,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:02:53,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:02:53,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:02:53,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:02:53,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:02:53,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 00:02:53,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:02:53,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:02:53,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:02:53,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:02:53,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:02:53,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:02:53,423 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:02:53,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:02:53,424 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:02:53,424 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:02:53,426 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:02:53,426 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:02:53,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:02:53,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:02:53,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:02:53,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:02:53,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:02:53,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:02:53,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:02:53,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:02:53,430 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:02:53,430 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:02:53,430 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:02:53,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:02:53,431 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:02:53,431 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:02:53,431 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:02:53,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:02:53,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:02:53,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:02:53,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:02:53,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:02:53,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:02:53,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:02:53,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:02:53,434 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:02:53,434 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:02:53,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:02:53,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:02:53,435 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_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-11-21 00:02:53,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:02:53,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:02:53,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:02:53,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:02:53,981 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:02:53,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-21 00:02:54,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/e3e1d332e/041d65b95c494738b1c640e47f67c02b/FLAG887447b0c [2021-11-21 00:02:54,891 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:02:54,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-21 00:02:54,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/e3e1d332e/041d65b95c494738b1c640e47f67c02b/FLAG887447b0c [2021-11-21 00:02:54,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/data/e3e1d332e/041d65b95c494738b1c640e47f67c02b [2021-11-21 00:02:54,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:02:54,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:02:54,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:02:54,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:02:54,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:02:54,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:02:54" (1/1) ... [2021-11-21 00:02:55,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d6686d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:55, skipping insertion in model container [2021-11-21 00:02:55,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:02:54" (1/1) ... [2021-11-21 00:02:55,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:02:55,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:02:55,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-21 00:02:56,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:02:56,183 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 00:02:56,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:02:56,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-21 00:02:56,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:02:56,498 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:02:56,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-21 00:02:56,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:02:56,845 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:02:56,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56 WrapperNode [2021-11-21 00:02:56,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:02:56,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:02:56,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:02:56,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:02:56,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:56,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,099 INFO L137 Inliner]: procedures = 180, calls = 623, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2491 [2021-11-21 00:02:57,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:02:57,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:02:57,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:02:57,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:02:57,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:02:57,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:02:57,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:02:57,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:02:57,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (1/1) ... [2021-11-21 00:02:57,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:02:57,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:02:57,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:02:57,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:02:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 00:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-21 00:02:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-21 00:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:02:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:02:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:02:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:02:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:02:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:02:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:02:57,996 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:02:57,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:02:58,003 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:03:10,397 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:03:10,426 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:03:10,426 INFO L301 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-21 00:03:10,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:10 BoogieIcfgContainer [2021-11-21 00:03:10,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:03:10,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:03:10,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:03:10,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:03:10,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:02:54" (1/3) ... [2021-11-21 00:03:10,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d275ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:03:10, skipping insertion in model container [2021-11-21 00:03:10,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:02:56" (2/3) ... [2021-11-21 00:03:10,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d275ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:03:10, skipping insertion in model container [2021-11-21 00:03:10,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:10" (3/3) ... [2021-11-21 00:03:10,444 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2021-11-21 00:03:10,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:03:10,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2021-11-21 00:03:10,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:03:10,518 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 [2021-11-21 00:03:10,519 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2021-11-21 00:03:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 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) [2021-11-21 00:03:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:03:10,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:10,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:03:10,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-21 00:03:10,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:10,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854558283] [2021-11-21 00:03:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:10,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:10,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:10,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:03:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:10,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:03:10,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:11,062 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 [2021-11-21 00:03:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:11,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:11,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:11,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854558283] [2021-11-21 00:03:11,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854558283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:11,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:11,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:03:11,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085731657] [2021-11-21 00:03:11,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:11,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:03:11,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:03:11,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:03:11,224 INFO L87 Difference]: Start difference. First operand has 2437 states, 1232 states have (on average 2.2280844155844157) internal successors, (2745), 2423 states have internal predecessors, (2745), 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) [2021-11-21 00:03:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:17,880 INFO L93 Difference]: Finished difference Result 3281 states and 3483 transitions. [2021-11-21 00:03:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:17,882 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 [2021-11-21 00:03:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:17,926 INFO L225 Difference]: With dead ends: 3281 [2021-11-21 00:03:17,926 INFO L226 Difference]: Without dead ends: 3279 [2021-11-21 00:03:17,928 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 [2021-11-21 00:03:17,933 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 2318 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:17,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2230 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 00:03:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-11-21 00:03:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2579. [2021-11-21 00:03:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 1398 states have (on average 2.067238912732475) internal successors, (2890), 2563 states have internal predecessors, (2890), 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) [2021-11-21 00:03:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 2922 transitions. [2021-11-21 00:03:18,106 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 2922 transitions. Word has length 3 [2021-11-21 00:03:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:18,107 INFO L470 AbstractCegarLoop]: Abstraction has 2579 states and 2922 transitions. [2021-11-21 00:03:18,107 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) [2021-11-21 00:03:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 2922 transitions. [2021-11-21 00:03:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:03:18,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:18,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:03:18,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:18,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:18,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-21 00:03:18,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:18,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389625554] [2021-11-21 00:03:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:18,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:18,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:18,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:18,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:03:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:18,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:03:18,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:18,631 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 [2021-11-21 00:03:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:18,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:18,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:18,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389625554] [2021-11-21 00:03:18,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389625554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:18,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:18,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:03:18,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211644756] [2021-11-21 00:03:18,747 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:18,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:18,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:18,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:18,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:18,753 INFO L87 Difference]: Start difference. First operand 2579 states and 2922 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) [2021-11-21 00:03:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:32,407 INFO L93 Difference]: Finished difference Result 4057 states and 4519 transitions. [2021-11-21 00:03:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:03:32,409 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 [2021-11-21 00:03:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:32,437 INFO L225 Difference]: With dead ends: 4057 [2021-11-21 00:03:32,437 INFO L226 Difference]: Without dead ends: 4057 [2021-11-21 00:03:32,437 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 [2021-11-21 00:03:32,439 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 3042 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:32,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 3708 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2021-11-21 00:03:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-11-21 00:03:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 2743. [2021-11-21 00:03:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 1574 states have (on average 2.053367217280813) internal successors, (3232), 2727 states have internal predecessors, (3232), 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) [2021-11-21 00:03:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3264 transitions. [2021-11-21 00:03:32,533 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3264 transitions. Word has length 3 [2021-11-21 00:03:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:32,533 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3264 transitions. [2021-11-21 00:03:32,534 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) [2021-11-21 00:03:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3264 transitions. [2021-11-21 00:03:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:03:32,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:32,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:32,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:32,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:32,749 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:32,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-21 00:03:32,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:32,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949011198] [2021-11-21 00:03:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:32,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:32,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:32,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:32,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:03:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:33,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:03:33,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:33,042 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 [2021-11-21 00:03:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:33,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:33,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:33,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949011198] [2021-11-21 00:03:33,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949011198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:33,087 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:33,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:03:33,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274044152] [2021-11-21 00:03:33,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:33,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:03:33,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:03:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:03:33,090 INFO L87 Difference]: Start difference. First operand 2743 states and 3264 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) [2021-11-21 00:03:37,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:37,952 INFO L93 Difference]: Finished difference Result 3481 states and 4002 transitions. [2021-11-21 00:03:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:37,953 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 [2021-11-21 00:03:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:37,977 INFO L225 Difference]: With dead ends: 3481 [2021-11-21 00:03:37,977 INFO L226 Difference]: Without dead ends: 3481 [2021-11-21 00:03:37,978 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 [2021-11-21 00:03:37,980 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 1987 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:37,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 3185 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 00:03:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-11-21 00:03:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 2652. [2021-11-21 00:03:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1574 states have (on average 1.9739517153748412) internal successors, (3107), 2636 states have internal predecessors, (3107), 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) [2021-11-21 00:03:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3139 transitions. [2021-11-21 00:03:38,110 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3139 transitions. Word has length 8 [2021-11-21 00:03:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:38,111 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3139 transitions. [2021-11-21 00:03:38,111 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) [2021-11-21 00:03:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3139 transitions. [2021-11-21 00:03:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:03:38,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:38,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:38,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:38,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:38,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-21 00:03:38,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:38,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622044996] [2021-11-21 00:03:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:38,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:38,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:38,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 00:03:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:38,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:03:38,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:38,622 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 [2021-11-21 00:03:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:38,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:38,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:38,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:38,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622044996] [2021-11-21 00:03:38,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622044996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:38,783 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:38,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:03:38,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772498870] [2021-11-21 00:03:38,784 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:38,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:38,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:38,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:38,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:38,786 INFO L87 Difference]: Start difference. First operand 2652 states and 3139 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) [2021-11-21 00:03:51,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:51,956 INFO L93 Difference]: Finished difference Result 3607 states and 4030 transitions. [2021-11-21 00:03:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:03:51,958 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 [2021-11-21 00:03:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:51,978 INFO L225 Difference]: With dead ends: 3607 [2021-11-21 00:03:51,979 INFO L226 Difference]: Without dead ends: 3607 [2021-11-21 00:03:51,979 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 [2021-11-21 00:03:51,981 INFO L933 BasicCegarLoop]: 2677 mSDtfsCounter, 1441 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 5029 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:51,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 5029 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2021-11-21 00:03:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2021-11-21 00:03:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 2644. [2021-11-21 00:03:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1576 states have (on average 1.958756345177665) internal successors, (3087), 2628 states have internal predecessors, (3087), 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) [2021-11-21 00:03:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3119 transitions. [2021-11-21 00:03:52,065 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3119 transitions. Word has length 8 [2021-11-21 00:03:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:52,066 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3119 transitions. [2021-11-21 00:03:52,066 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) [2021-11-21 00:03:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3119 transitions. [2021-11-21 00:03:52,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:03:52,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:52,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:52,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-21 00:03:52,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:52,281 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:52,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:52,281 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-21 00:03:52,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:52,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631451921] [2021-11-21 00:03:52,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:52,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:52,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:52,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 00:03:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:52,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:03:52,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:52,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:52,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:52,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631451921] [2021-11-21 00:03:52,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631451921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:52,591 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:52,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:03:52,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943954092] [2021-11-21 00:03:52,591 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:52,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:52,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:52,593 INFO L87 Difference]: Start difference. First operand 2644 states and 3119 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) [2021-11-21 00:03:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:52,694 INFO L93 Difference]: Finished difference Result 2602 states and 3076 transitions. [2021-11-21 00:03:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:52,695 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 [2021-11-21 00:03:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:52,713 INFO L225 Difference]: With dead ends: 2602 [2021-11-21 00:03:52,713 INFO L226 Difference]: Without dead ends: 2602 [2021-11-21 00:03:52,713 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 [2021-11-21 00:03:52,716 INFO L933 BasicCegarLoop]: 2396 mSDtfsCounter, 2384 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:52,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 3606 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:03:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-21 00:03:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2602. [2021-11-21 00:03:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1558 states have (on average 1.9537869062901156) internal successors, (3044), 2586 states have internal predecessors, (3044), 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) [2021-11-21 00:03:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3076 transitions. [2021-11-21 00:03:52,817 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3076 transitions. Word has length 11 [2021-11-21 00:03:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:52,818 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3076 transitions. [2021-11-21 00:03:52,818 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) [2021-11-21 00:03:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3076 transitions. [2021-11-21 00:03:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:03:52,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:52,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:52,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-21 00:03:53,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:53,036 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:53,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:53,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-21 00:03:53,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:53,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334095014] [2021-11-21 00:03:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:53,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:53,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:53,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 00:03:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:53,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:03:53,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:53,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:53,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:53,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334095014] [2021-11-21 00:03:53,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334095014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:53,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:53,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 00:03:53,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551562843] [2021-11-21 00:03:53,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:53,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:03:53,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:03:53,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:53,347 INFO L87 Difference]: Start difference. First operand 2602 states and 3076 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) [2021-11-21 00:03:53,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:53,500 INFO L93 Difference]: Finished difference Result 2581 states and 3048 transitions. [2021-11-21 00:03:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:03:53,501 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 [2021-11-21 00:03:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:53,518 INFO L225 Difference]: With dead ends: 2581 [2021-11-21 00:03:53,518 INFO L226 Difference]: Without dead ends: 2581 [2021-11-21 00:03:53,518 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 [2021-11-21 00:03:53,519 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 2316 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:53,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 5905 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-11-21 00:03:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2580. [2021-11-21 00:03:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1550 states have (on average 1.9451612903225806) internal successors, (3015), 2564 states have internal predecessors, (3015), 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) [2021-11-21 00:03:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3047 transitions. [2021-11-21 00:03:53,588 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3047 transitions. Word has length 13 [2021-11-21 00:03:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:53,588 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3047 transitions. [2021-11-21 00:03:53,588 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) [2021-11-21 00:03:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3047 transitions. [2021-11-21 00:03:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:03:53,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:53,590 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] [2021-11-21 00:03:53,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:53,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:53,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:53,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-21 00:03:53,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:53,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173338882] [2021-11-21 00:03:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:53,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:53,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:53,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:53,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 00:03:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:54,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:03:54,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:54,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:54,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:54,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173338882] [2021-11-21 00:03:54,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173338882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:54,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:54,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:03:54,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751552213] [2021-11-21 00:03:54,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:54,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:54,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:54,162 INFO L87 Difference]: Start difference. First operand 2580 states and 3047 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) [2021-11-21 00:03:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:54,242 INFO L93 Difference]: Finished difference Result 4234 states and 4857 transitions. [2021-11-21 00:03:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:54,243 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 [2021-11-21 00:03:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:54,281 INFO L225 Difference]: With dead ends: 4234 [2021-11-21 00:03:54,282 INFO L226 Difference]: Without dead ends: 4234 [2021-11-21 00:03:54,282 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 [2021-11-21 00:03:54,284 INFO L933 BasicCegarLoop]: 4082 mSDtfsCounter, 2277 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 7690 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:54,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2287 Valid, 7690 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:03:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2021-11-21 00:03:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2538. [2021-11-21 00:03:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 1532 states have (on average 1.9399477806788512) internal successors, (2972), 2522 states have internal predecessors, (2972), 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) [2021-11-21 00:03:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3004 transitions. [2021-11-21 00:03:54,394 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3004 transitions. Word has length 20 [2021-11-21 00:03:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:54,395 INFO L470 AbstractCegarLoop]: Abstraction has 2538 states and 3004 transitions. [2021-11-21 00:03:54,395 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) [2021-11-21 00:03:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3004 transitions. [2021-11-21 00:03:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:03:54,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:54,397 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] [2021-11-21 00:03:54,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:54,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:54,612 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-21 00:03:54,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:54,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383803630] [2021-11-21 00:03:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:54,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:54,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:54,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 00:03:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:54,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:03:54,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:54,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:54,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:54,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383803630] [2021-11-21 00:03:54,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383803630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:54,958 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:54,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:03:54,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243636500] [2021-11-21 00:03:54,959 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:54,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:54,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:54,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:54,961 INFO L87 Difference]: Start difference. First operand 2538 states and 3004 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) [2021-11-21 00:03:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:55,067 INFO L93 Difference]: Finished difference Result 4107 states and 4676 transitions. [2021-11-21 00:03:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:03:55,068 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 [2021-11-21 00:03:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:55,086 INFO L225 Difference]: With dead ends: 4107 [2021-11-21 00:03:55,086 INFO L226 Difference]: Without dead ends: 4107 [2021-11-21 00:03:55,087 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 [2021-11-21 00:03:55,088 INFO L933 BasicCegarLoop]: 3767 mSDtfsCounter, 4468 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:55,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 5521 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-21 00:03:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 2460. [2021-11-21 00:03:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1478 states have (on average 1.9235453315290933) internal successors, (2843), 2444 states have internal predecessors, (2843), 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) [2021-11-21 00:03:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 2875 transitions. [2021-11-21 00:03:55,171 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 2875 transitions. Word has length 20 [2021-11-21 00:03:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:55,172 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 2875 transitions. [2021-11-21 00:03:55,172 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) [2021-11-21 00:03:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 2875 transitions. [2021-11-21 00:03:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:03:55,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:55,174 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] [2021-11-21 00:03:55,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:55,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:55,390 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-21 00:03:55,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:55,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843141513] [2021-11-21 00:03:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:55,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:55,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:55,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:55,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 00:03:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:55,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:03:55,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:55,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:55,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:55,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843141513] [2021-11-21 00:03:55,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843141513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:55,814 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:55,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 00:03:55,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197766200] [2021-11-21 00:03:55,815 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:55,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:03:55,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:55,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:03:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:55,818 INFO L87 Difference]: Start difference. First operand 2460 states and 2875 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) [2021-11-21 00:03:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:56,036 INFO L93 Difference]: Finished difference Result 4093 states and 4657 transitions. [2021-11-21 00:03:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:03:56,037 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 [2021-11-21 00:03:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:56,063 INFO L225 Difference]: With dead ends: 4093 [2021-11-21 00:03:56,064 INFO L226 Difference]: Without dead ends: 4093 [2021-11-21 00:03:56,064 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 [2021-11-21 00:03:56,065 INFO L933 BasicCegarLoop]: 3728 mSDtfsCounter, 4400 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 9210 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:56,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4410 Valid, 9210 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-11-21 00:03:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2438. [2021-11-21 00:03:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 1470 states have (on average 1.9142857142857144) internal successors, (2814), 2422 states have internal predecessors, (2814), 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) [2021-11-21 00:03:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 2846 transitions. [2021-11-21 00:03:56,144 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 2846 transitions. Word has length 22 [2021-11-21 00:03:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:56,144 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 2846 transitions. [2021-11-21 00:03:56,145 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) [2021-11-21 00:03:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 2846 transitions. [2021-11-21 00:03:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:03:56,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:56,150 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] [2021-11-21 00:03:56,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:56,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:56,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:56,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-21 00:03:56,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:56,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102845744] [2021-11-21 00:03:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:56,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:56,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:56,368 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:56,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 00:03:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:56,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:03:56,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:56,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:56,735 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:56,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102845744] [2021-11-21 00:03:56,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102845744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:56,736 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:56,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 00:03:56,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838576345] [2021-11-21 00:03:56,737 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:56,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:03:56,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:03:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:03:56,738 INFO L87 Difference]: Start difference. First operand 2438 states and 2846 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) [2021-11-21 00:03:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:56,890 INFO L93 Difference]: Finished difference Result 4028 states and 4534 transitions. [2021-11-21 00:03:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:03:56,890 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 [2021-11-21 00:03:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:56,903 INFO L225 Difference]: With dead ends: 4028 [2021-11-21 00:03:56,903 INFO L226 Difference]: Without dead ends: 4028 [2021-11-21 00:03:56,903 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 [2021-11-21 00:03:56,904 INFO L933 BasicCegarLoop]: 3874 mSDtfsCounter, 2170 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 11179 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:56,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 11179 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:03:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-11-21 00:03:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2400. [2021-11-21 00:03:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1446 states have (on average 1.8858921161825726) internal successors, (2727), 2384 states have internal predecessors, (2727), 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) [2021-11-21 00:03:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2759 transitions. [2021-11-21 00:03:56,998 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2759 transitions. Word has length 22 [2021-11-21 00:03:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:56,999 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2759 transitions. [2021-11-21 00:03:57,000 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) [2021-11-21 00:03:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2759 transitions. [2021-11-21 00:03:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 00:03:57,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:57,003 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] [2021-11-21 00:03:57,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:57,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:03:57,204 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:03:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-21 00:03:57,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:03:57,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248227067] [2021-11-21 00:03:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:57,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:03:57,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:03:57,207 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:03:57,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 00:03:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:57,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:03:57,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:57,452 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 [2021-11-21 00:03:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:57,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:03:57,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:03:57,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248227067] [2021-11-21 00:03:57,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248227067] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:57,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:57,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:03:57,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65514971] [2021-11-21 00:03:57,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:57,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:57,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:03:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:57,721 INFO L87 Difference]: Start difference. First operand 2400 states and 2759 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) [2021-11-21 00:04:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:02,661 INFO L93 Difference]: Finished difference Result 3021 states and 3299 transitions. [2021-11-21 00:04:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:02,661 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 [2021-11-21 00:04:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:02,670 INFO L225 Difference]: With dead ends: 3021 [2021-11-21 00:04:02,670 INFO L226 Difference]: Without dead ends: 3021 [2021-11-21 00:04:02,671 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 [2021-11-21 00:04:02,672 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 3081 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:02,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 2791 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 00:04:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-11-21 00:04:02,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2396. [2021-11-21 00:04:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1446 states have (on average 1.8831258644536653) internal successors, (2723), 2380 states have internal predecessors, (2723), 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) [2021-11-21 00:04:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2755 transitions. [2021-11-21 00:04:02,730 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 2755 transitions. Word has length 27 [2021-11-21 00:04:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:02,730 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 2755 transitions. [2021-11-21 00:04:02,730 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) [2021-11-21 00:04:02,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 2755 transitions. [2021-11-21 00:04:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 00:04:02,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:02,734 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] [2021-11-21 00:04:02,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:02,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:02,949 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:04:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-21 00:04:02,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:02,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458382398] [2021-11-21 00:04:02,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:02,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:02,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:02,952 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:02,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 00:04:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:03,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:04:03,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:03,191 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 [2021-11-21 00:04:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:03,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:04,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:04,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458382398] [2021-11-21 00:04:04,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458382398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:04,044 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:04,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:04:04,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524892120] [2021-11-21 00:04:04,045 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:04,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:04:04,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:04:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:04:04,046 INFO L87 Difference]: Start difference. First operand 2396 states and 2755 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) [2021-11-21 00:04:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:19,754 INFO L93 Difference]: Finished difference Result 3571 states and 3924 transitions. [2021-11-21 00:04:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:04:19,756 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 [2021-11-21 00:04:19,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:19,765 INFO L225 Difference]: With dead ends: 3571 [2021-11-21 00:04:19,765 INFO L226 Difference]: Without dead ends: 3571 [2021-11-21 00:04:19,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:04:19,767 INFO L933 BasicCegarLoop]: 1575 mSDtfsCounter, 6054 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6054 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:19,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6054 Valid, 4341 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2021-11-21 00:04:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-11-21 00:04:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2429. [2021-11-21 00:04:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 1480 states have (on average 1.864864864864865) internal successors, (2760), 2413 states have internal predecessors, (2760), 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) [2021-11-21 00:04:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 2792 transitions. [2021-11-21 00:04:19,823 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 2792 transitions. Word has length 27 [2021-11-21 00:04:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:19,823 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 2792 transitions. [2021-11-21 00:04:19,824 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) [2021-11-21 00:04:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 2792 transitions. [2021-11-21 00:04:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:04:19,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:19,826 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] [2021-11-21 00:04:19,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:20,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:20,040 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:04:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-21 00:04:20,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:20,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091398896] [2021-11-21 00:04:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:20,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:20,043 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:20,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 00:04:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:20,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:20,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:20,367 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 [2021-11-21 00:04:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:20,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:20,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:20,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091398896] [2021-11-21 00:04:20,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091398896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:20,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:20,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:04:20,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113474115] [2021-11-21 00:04:20,676 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:20,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:20,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:20,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:20,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:20,677 INFO L87 Difference]: Start difference. First operand 2429 states and 2792 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) [2021-11-21 00:04:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:29,180 INFO L93 Difference]: Finished difference Result 4682 states and 5248 transitions. [2021-11-21 00:04:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:04:29,180 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 [2021-11-21 00:04:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:29,192 INFO L225 Difference]: With dead ends: 4682 [2021-11-21 00:04:29,192 INFO L226 Difference]: Without dead ends: 4682 [2021-11-21 00:04:29,192 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 [2021-11-21 00:04:29,194 INFO L933 BasicCegarLoop]: 2684 mSDtfsCounter, 4263 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:29,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4270 Valid, 5056 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 00:04:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-11-21 00:04:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 2425. [2021-11-21 00:04:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1480 states have (on average 1.8621621621621622) internal successors, (2756), 2409 states have internal predecessors, (2756), 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) [2021-11-21 00:04:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2788 transitions. [2021-11-21 00:04:29,254 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2788 transitions. Word has length 36 [2021-11-21 00:04:29,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:29,254 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2788 transitions. [2021-11-21 00:04:29,255 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) [2021-11-21 00:04:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2788 transitions. [2021-11-21 00:04:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:04:29,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:29,256 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] [2021-11-21 00:04:29,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-21 00:04:29,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:29,471 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:04:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-21 00:04:29,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:29,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37509005] [2021-11-21 00:04:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:29,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:29,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:29,475 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:29,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 00:04:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:29,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:04:29,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:29,831 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 [2021-11-21 00:04:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:30,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:30,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:30,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37509005] [2021-11-21 00:04:30,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37509005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:30,857 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:30,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:04:30,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776769711] [2021-11-21 00:04:30,857 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:30,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:04:30,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:04:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:04:30,858 INFO L87 Difference]: Start difference. First operand 2425 states and 2788 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) [2021-11-21 00:04:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:54,340 INFO L93 Difference]: Finished difference Result 4594 states and 5036 transitions. [2021-11-21 00:04:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:04:54,342 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 [2021-11-21 00:04:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:54,351 INFO L225 Difference]: With dead ends: 4594 [2021-11-21 00:04:54,352 INFO L226 Difference]: Without dead ends: 4594 [2021-11-21 00:04:54,352 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 [2021-11-21 00:04:54,353 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 4252 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 4879 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:54,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4257 Valid, 7476 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4879 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time] [2021-11-21 00:04:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-11-21 00:04:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 2421. [2021-11-21 00:04:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1480 states have (on average 1.8594594594594596) internal successors, (2752), 2405 states have internal predecessors, (2752), 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) [2021-11-21 00:04:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 2784 transitions. [2021-11-21 00:04:54,413 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 2784 transitions. Word has length 36 [2021-11-21 00:04:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:54,413 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 2784 transitions. [2021-11-21 00:04:54,414 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) [2021-11-21 00:04:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 2784 transitions. [2021-11-21 00:04:54,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:04:54,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:54,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:54,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-21 00:04:54,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:54,631 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:04:54,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:54,631 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-21 00:04:54,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:54,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681421400] [2021-11-21 00:04:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:54,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:54,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:54,634 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:54,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 00:04:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:54,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:54,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:54,923 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 [2021-11-21 00:04:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:55,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:55,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:55,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681421400] [2021-11-21 00:04:55,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681421400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:55,200 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:55,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:04:55,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601983537] [2021-11-21 00:04:55,200 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:55,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:55,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:55,202 INFO L87 Difference]: Start difference. First operand 2421 states and 2784 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) [2021-11-21 00:05:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:03,768 INFO L93 Difference]: Finished difference Result 5038 states and 5620 transitions. [2021-11-21 00:05:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:05:03,769 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 [2021-11-21 00:05:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:03,774 INFO L225 Difference]: With dead ends: 5038 [2021-11-21 00:05:03,774 INFO L226 Difference]: Without dead ends: 5038 [2021-11-21 00:05:03,774 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 [2021-11-21 00:05:03,775 INFO L933 BasicCegarLoop]: 2521 mSDtfsCounter, 4829 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:03,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4839 Valid, 5082 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 00:05:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2021-11-21 00:05:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 2418. [2021-11-21 00:05:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.852027027027027) internal successors, (2741), 2402 states have internal predecessors, (2741), 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) [2021-11-21 00:05:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2773 transitions. [2021-11-21 00:05:03,834 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2773 transitions. Word has length 36 [2021-11-21 00:05:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:03,834 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2773 transitions. [2021-11-21 00:05:03,835 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) [2021-11-21 00:05:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2773 transitions. [2021-11-21 00:05:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:05:03,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:03,836 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] [2021-11-21 00:05:03,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:04,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:04,052 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-21 00:05:04,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988569077] [2021-11-21 00:05:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:04,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:04,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:04,055 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:04,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 00:05:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:04,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:05:04,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:04,311 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 [2021-11-21 00:05:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:04,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:05,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988569077] [2021-11-21 00:05:05,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988569077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:05,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:05,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:05:05,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716443660] [2021-11-21 00:05:05,207 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:05,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:05:05,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:05:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:05:05,208 INFO L87 Difference]: Start difference. First operand 2418 states and 2773 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) [2021-11-21 00:05:31,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:31,161 INFO L93 Difference]: Finished difference Result 5170 states and 5700 transitions. [2021-11-21 00:05:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:05:31,162 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 [2021-11-21 00:05:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:31,167 INFO L225 Difference]: With dead ends: 5170 [2021-11-21 00:05:31,167 INFO L226 Difference]: Without dead ends: 5170 [2021-11-21 00:05:31,167 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 [2021-11-21 00:05:31,168 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 5159 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:31,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 7751 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2021-11-21 00:05:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2021-11-21 00:05:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 2418. [2021-11-21 00:05:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1480 states have (on average 1.8493243243243243) internal successors, (2737), 2402 states have internal predecessors, (2737), 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) [2021-11-21 00:05:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2769 transitions. [2021-11-21 00:05:31,233 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2769 transitions. Word has length 36 [2021-11-21 00:05:31,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:31,234 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 2769 transitions. [2021-11-21 00:05:31,234 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) [2021-11-21 00:05:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2769 transitions. [2021-11-21 00:05:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-21 00:05:31,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:31,235 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] [2021-11-21 00:05:31,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:31,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:31,451 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-21 00:05:31,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:31,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575386038] [2021-11-21 00:05:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:31,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:31,454 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:31,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 00:05:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:31,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:05:31,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:31,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:31,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:31,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575386038] [2021-11-21 00:05:31,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575386038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:31,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:31,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:05:31,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851869117] [2021-11-21 00:05:31,952 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:05:31,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:31,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:05:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:05:31,954 INFO L87 Difference]: Start difference. First operand 2418 states and 2769 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) [2021-11-21 00:05:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:32,037 INFO L93 Difference]: Finished difference Result 2412 states and 2755 transitions. [2021-11-21 00:05:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:05:32,037 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 [2021-11-21 00:05:32,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:32,041 INFO L225 Difference]: With dead ends: 2412 [2021-11-21 00:05:32,042 INFO L226 Difference]: Without dead ends: 2412 [2021-11-21 00:05:32,042 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 [2021-11-21 00:05:32,044 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 1145 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:32,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 5385 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:05:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-21 00:05:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-11-21 00:05:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1474 states have (on average 1.8473541383989145) internal successors, (2723), 2396 states have internal predecessors, (2723), 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) [2021-11-21 00:05:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 2755 transitions. [2021-11-21 00:05:32,089 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 2755 transitions. Word has length 40 [2021-11-21 00:05:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:32,090 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 2755 transitions. [2021-11-21 00:05:32,090 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) [2021-11-21 00:05:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 2755 transitions. [2021-11-21 00:05:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-21 00:05:32,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:32,092 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] [2021-11-21 00:05:32,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:32,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:32,307 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-21 00:05:32,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:32,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559138698] [2021-11-21 00:05:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:32,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:32,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:32,311 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:32,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-21 00:05:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:32,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:05:32,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:32,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:33,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:33,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559138698] [2021-11-21 00:05:33,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559138698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:33,383 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:33,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:05:33,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995847989] [2021-11-21 00:05:33,384 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:33,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:05:33,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:05:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:05:33,385 INFO L87 Difference]: Start difference. First operand 2412 states and 2755 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) [2021-11-21 00:05:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:33,813 INFO L93 Difference]: Finished difference Result 3930 states and 4407 transitions. [2021-11-21 00:05:33,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:05:33,814 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 [2021-11-21 00:05:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:33,818 INFO L225 Difference]: With dead ends: 3930 [2021-11-21 00:05:33,818 INFO L226 Difference]: Without dead ends: 3930 [2021-11-21 00:05:33,819 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 [2021-11-21 00:05:33,819 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1564 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:33,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 4296 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:05:33,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-11-21 00:05:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3131. [2021-11-21 00:05:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2189 states have (on average 1.814070351758794) internal successors, (3971), 3108 states have internal predecessors, (3971), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-21 00:05:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4017 transitions. [2021-11-21 00:05:33,887 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4017 transitions. Word has length 48 [2021-11-21 00:05:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:33,887 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 4017 transitions. [2021-11-21 00:05:33,888 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) [2021-11-21 00:05:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4017 transitions. [2021-11-21 00:05:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 00:05:33,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:33,889 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] [2021-11-21 00:05:33,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:34,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:34,112 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-21 00:05:34,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:34,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197754314] [2021-11-21 00:05:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:34,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:34,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:34,116 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:34,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 00:05:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:34,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:05:34,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:34,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:34,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197754314] [2021-11-21 00:05:34,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197754314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:34,787 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:34,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:05:34,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513983343] [2021-11-21 00:05:34,788 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:34,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:05:34,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:05:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:05:34,789 INFO L87 Difference]: Start difference. First operand 3131 states and 4017 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) [2021-11-21 00:05:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:34,909 INFO L93 Difference]: Finished difference Result 4459 states and 5419 transitions. [2021-11-21 00:05:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:05:34,910 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 [2021-11-21 00:05:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:34,917 INFO L225 Difference]: With dead ends: 4459 [2021-11-21 00:05:34,917 INFO L226 Difference]: Without dead ends: 4459 [2021-11-21 00:05:34,918 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 [2021-11-21 00:05:34,918 INFO L933 BasicCegarLoop]: 3642 mSDtfsCounter, 2139 mSDsluCounter, 5125 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 8767 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:34,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 8767 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:05:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2021-11-21 00:05:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 3107. [2021-11-21 00:05:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 2165 states have (on average 1.8157043879907622) internal successors, (3931), 3084 states have internal predecessors, (3931), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-21 00:05:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 3977 transitions. [2021-11-21 00:05:34,998 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 3977 transitions. Word has length 51 [2021-11-21 00:05:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:34,999 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 3977 transitions. [2021-11-21 00:05:34,999 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) [2021-11-21 00:05:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 3977 transitions. [2021-11-21 00:05:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-21 00:05:35,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:35,000 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] [2021-11-21 00:05:35,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:35,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:35,216 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-21 00:05:35,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:35,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097973051] [2021-11-21 00:05:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:35,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:35,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:35,219 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:35,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 00:05:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:35,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:05:35,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:35,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:35,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:35,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097973051] [2021-11-21 00:05:35,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097973051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:35,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:35,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:05:35,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366172266] [2021-11-21 00:05:35,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:35,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:05:35,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:05:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:05:35,896 INFO L87 Difference]: Start difference. First operand 3107 states and 3977 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) [2021-11-21 00:05:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:36,009 INFO L93 Difference]: Finished difference Result 4204 states and 4917 transitions. [2021-11-21 00:05:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:05:36,010 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 [2021-11-21 00:05:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:36,016 INFO L225 Difference]: With dead ends: 4204 [2021-11-21 00:05:36,017 INFO L226 Difference]: Without dead ends: 4204 [2021-11-21 00:05:36,017 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 [2021-11-21 00:05:36,018 INFO L933 BasicCegarLoop]: 3683 mSDtfsCounter, 2130 mSDsluCounter, 5216 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:36,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 8899 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:05:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-11-21 00:05:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3095. [2021-11-21 00:05:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2153 states have (on average 1.8165350673478866) internal successors, (3911), 3072 states have internal predecessors, (3911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-21 00:05:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3957 transitions. [2021-11-21 00:05:36,129 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3957 transitions. Word has length 54 [2021-11-21 00:05:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:36,130 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3957 transitions. [2021-11-21 00:05:36,130 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) [2021-11-21 00:05:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3957 transitions. [2021-11-21 00:05:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 00:05:36,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:36,131 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] [2021-11-21 00:05:36,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:36,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:36,347 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash -345082942, now seen corresponding path program 1 times [2021-11-21 00:05:36,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:36,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330930402] [2021-11-21 00:05:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:36,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:36,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:36,351 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:36,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-21 00:05:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:36,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:05:36,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:36,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:36,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:36,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:36,730 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-21 00:05:36,730 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 [2021-11-21 00:05:36,815 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-21 00:05:36,815 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 [2021-11-21 00:05:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:36,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:37,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:37,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330930402] [2021-11-21 00:05:37,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330930402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:37,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:37,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 00:05:37,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912552094] [2021-11-21 00:05:37,153 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:37,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:05:37,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:05:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:05:37,154 INFO L87 Difference]: Start difference. First operand 3095 states and 3957 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) [2021-11-21 00:05:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:41,222 INFO L93 Difference]: Finished difference Result 3323 states and 4196 transitions. [2021-11-21 00:05:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:05:41,223 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 [2021-11-21 00:05:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:41,246 INFO L225 Difference]: With dead ends: 3323 [2021-11-21 00:05:41,246 INFO L226 Difference]: Without dead ends: 3323 [2021-11-21 00:05:41,246 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 [2021-11-21 00:05:41,248 INFO L933 BasicCegarLoop]: 2062 mSDtfsCounter, 1027 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 7241 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:41,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 7241 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-21 00:05:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-11-21 00:05:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3061. [2021-11-21 00:05:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 2119 states have (on average 1.8291647003303444) internal successors, (3876), 3038 states have internal predecessors, (3876), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-21 00:05:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3922 transitions. [2021-11-21 00:05:41,304 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3922 transitions. Word has length 57 [2021-11-21 00:05:41,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:41,305 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 3922 transitions. [2021-11-21 00:05:41,305 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) [2021-11-21 00:05:41,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3922 transitions. [2021-11-21 00:05:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-21 00:05:41,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:41,306 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] [2021-11-21 00:05:41,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:41,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:41,524 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-21 00:05:41,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:41,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516170990] [2021-11-21 00:05:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:41,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:41,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:41,528 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:41,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-21 00:05:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:41,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:05:41,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:42,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:42,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:42,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516170990] [2021-11-21 00:05:42,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516170990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:42,737 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:42,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:05:42,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296991912] [2021-11-21 00:05:42,738 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:42,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:05:42,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:05:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:05:42,739 INFO L87 Difference]: Start difference. First operand 3061 states and 3922 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) [2021-11-21 00:05:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:42,948 INFO L93 Difference]: Finished difference Result 4503 states and 5557 transitions. [2021-11-21 00:05:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:05:42,949 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 [2021-11-21 00:05:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:42,957 INFO L225 Difference]: With dead ends: 4503 [2021-11-21 00:05:42,957 INFO L226 Difference]: Without dead ends: 4503 [2021-11-21 00:05:42,959 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 [2021-11-21 00:05:42,961 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 1262 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:42,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 4860 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:05:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2021-11-21 00:05:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3784. [2021-11-21 00:05:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2838 states have (on average 1.7924594785059902) internal successors, (5087), 3754 states have internal predecessors, (5087), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:05:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5147 transitions. [2021-11-21 00:05:43,037 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5147 transitions. Word has length 59 [2021-11-21 00:05:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:43,037 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5147 transitions. [2021-11-21 00:05:43,037 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) [2021-11-21 00:05:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5147 transitions. [2021-11-21 00:05:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:05:43,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:43,039 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] [2021-11-21 00:05:43,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:43,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:43,256 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:05:43,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:43,257 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-21 00:05:43,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:43,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918221139] [2021-11-21 00:05:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:43,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:43,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:43,259 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:43,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-21 00:05:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:43,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:05:43,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:43,743 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 [2021-11-21 00:05:43,749 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 [2021-11-21 00:05:44,443 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:05:44,444 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 [2021-11-21 00:05:44,457 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:05:44,458 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 [2021-11-21 00:05:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:44,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:49,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:49,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918221139] [2021-11-21 00:05:49,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918221139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:49,949 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:49,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:05:49,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792562451] [2021-11-21 00:05:49,949 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:49,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:05:49,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:49,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:05:49,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 00:05:49,951 INFO L87 Difference]: Start difference. First operand 3784 states and 5147 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) [2021-11-21 00:06:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:01,417 INFO L93 Difference]: Finished difference Result 5542 states and 7453 transitions. [2021-11-21 00:06:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:06:01,418 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 [2021-11-21 00:06:01,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:01,430 INFO L225 Difference]: With dead ends: 5542 [2021-11-21 00:06:01,430 INFO L226 Difference]: Without dead ends: 5542 [2021-11-21 00:06:01,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 00:06:01,431 INFO L933 BasicCegarLoop]: 2391 mSDtfsCounter, 2433 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2792 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:01,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2441 Valid, 5116 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1638 Invalid, 0 Unknown, 2792 Unchecked, 11.3s Time] [2021-11-21 00:06:01,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-11-21 00:06:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 3754. [2021-11-21 00:06:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2840 states have (on average 1.7693661971830985) internal successors, (5025), 3724 states have internal predecessors, (5025), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:06:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5085 transitions. [2021-11-21 00:06:01,552 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5085 transitions. Word has length 62 [2021-11-21 00:06:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:01,553 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 5085 transitions. [2021-11-21 00:06:01,553 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) [2021-11-21 00:06:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5085 transitions. [2021-11-21 00:06:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:06:01,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:01,554 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] [2021-11-21 00:06:01,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:01,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:01,767 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:06:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash -272070766, now seen corresponding path program 1 times [2021-11-21 00:06:01,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:01,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456970877] [2021-11-21 00:06:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:01,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:01,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:01,771 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:01,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-21 00:06:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:02,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:06:02,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:02,383 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 [2021-11-21 00:06:02,392 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 [2021-11-21 00:06:03,298 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:06:03,299 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 [2021-11-21 00:06:03,306 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:06:03,307 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 [2021-11-21 00:06:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:03,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:10,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:10,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456970877] [2021-11-21 00:06:10,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456970877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:10,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:10,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:06:10,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516184200] [2021-11-21 00:06:10,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:10,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:06:10,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:10,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:06:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-21 00:06:10,683 INFO L87 Difference]: Start difference. First operand 3754 states and 5085 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) [2021-11-21 00:06:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:18,732 INFO L93 Difference]: Finished difference Result 3808 states and 5065 transitions. [2021-11-21 00:06:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:06:18,734 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 [2021-11-21 00:06:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:18,739 INFO L225 Difference]: With dead ends: 3808 [2021-11-21 00:06:18,740 INFO L226 Difference]: Without dead ends: 3808 [2021-11-21 00:06:18,740 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 [2021-11-21 00:06:18,741 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 1407 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1531 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:18,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 3582 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1052 Invalid, 0 Unknown, 1531 Unchecked, 8.0s Time] [2021-11-21 00:06:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2021-11-21 00:06:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3770. [2021-11-21 00:06:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2887 states have (on average 1.7322480083131278) internal successors, (5001), 3740 states have internal predecessors, (5001), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:06:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5061 transitions. [2021-11-21 00:06:18,825 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5061 transitions. Word has length 62 [2021-11-21 00:06:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:18,825 INFO L470 AbstractCegarLoop]: Abstraction has 3770 states and 5061 transitions. [2021-11-21 00:06:18,826 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) [2021-11-21 00:06:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5061 transitions. [2021-11-21 00:06:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:06:18,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:18,827 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] [2021-11-21 00:06:18,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:19,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:19,046 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:06:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:19,046 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times [2021-11-21 00:06:19,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:19,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782083280] [2021-11-21 00:06:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:19,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:19,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:19,049 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:19,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-21 00:06:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:19,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:06:19,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:19,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:19,778 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 [2021-11-21 00:06:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:20,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:20,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782083280] [2021-11-21 00:06:20,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782083280] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:20,183 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:20,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:06:20,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601893710] [2021-11-21 00:06:20,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:20,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:06:20,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:06:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:06:20,186 INFO L87 Difference]: Start difference. First operand 3770 states and 5061 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) [2021-11-21 00:06:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:24,198 INFO L93 Difference]: Finished difference Result 3768 states and 5057 transitions. [2021-11-21 00:06:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:06:24,199 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 [2021-11-21 00:06:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:24,211 INFO L225 Difference]: With dead ends: 3768 [2021-11-21 00:06:24,212 INFO L226 Difference]: Without dead ends: 3768 [2021-11-21 00:06:24,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:06:24,213 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 6498 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:24,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6508 Valid, 1801 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-21 00:06:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2021-11-21 00:06:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3768. [2021-11-21 00:06:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2887 states have (on average 1.7308624870107379) internal successors, (4997), 3738 states have internal predecessors, (4997), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:06:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5057 transitions. [2021-11-21 00:06:24,287 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5057 transitions. Word has length 64 [2021-11-21 00:06:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:24,287 INFO L470 AbstractCegarLoop]: Abstraction has 3768 states and 5057 transitions. [2021-11-21 00:06:24,288 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) [2021-11-21 00:06:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5057 transitions. [2021-11-21 00:06:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:06:24,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:24,289 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] [2021-11-21 00:06:24,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:24,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:24,507 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:06:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:24,507 INFO L85 PathProgramCache]: Analyzing trace with hash 533035699, now seen corresponding path program 1 times [2021-11-21 00:06:24,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:24,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593561837] [2021-11-21 00:06:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:24,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:24,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:24,509 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:24,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-21 00:06:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:24,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:06:24,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:25,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:25,206 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 [2021-11-21 00:06:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:25,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:25,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593561837] [2021-11-21 00:06:25,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593561837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:25,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:25,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:06:25,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433170116] [2021-11-21 00:06:25,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:25,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:06:25,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:06:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:06:25,586 INFO L87 Difference]: Start difference. First operand 3768 states and 5057 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) [2021-11-21 00:06:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:32,480 INFO L93 Difference]: Finished difference Result 3767 states and 5043 transitions. [2021-11-21 00:06:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:06:32,481 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 [2021-11-21 00:06:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:32,485 INFO L225 Difference]: With dead ends: 3767 [2021-11-21 00:06:32,485 INFO L226 Difference]: Without dead ends: 3767 [2021-11-21 00:06:32,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:06:32,486 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 1673 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:32,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 3052 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-21 00:06:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-21 00:06:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3715. [2021-11-21 00:06:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3715 states, 2840 states have (on average 1.7376760563380282) internal successors, (4935), 3685 states have internal predecessors, (4935), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:06:32,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3715 states to 3715 states and 4995 transitions. [2021-11-21 00:06:32,547 INFO L78 Accepts]: Start accepts. Automaton has 3715 states and 4995 transitions. Word has length 64 [2021-11-21 00:06:32,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:32,547 INFO L470 AbstractCegarLoop]: Abstraction has 3715 states and 4995 transitions. [2021-11-21 00:06:32,548 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) [2021-11-21 00:06:32,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3715 states and 4995 transitions. [2021-11-21 00:06:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:06:32,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:32,549 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] [2021-11-21 00:06:32,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:32,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:32,763 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:06:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:32,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-21 00:06:32,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:32,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607035468] [2021-11-21 00:06:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:32,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:32,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:32,767 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:32,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-21 00:06:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:33,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:06:33,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:33,327 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 [2021-11-21 00:06:33,346 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 [2021-11-21 00:06:33,400 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 [2021-11-21 00:06:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:33,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:33,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:33,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607035468] [2021-11-21 00:06:33,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607035468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:33,597 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:33,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:06:33,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095056193] [2021-11-21 00:06:33,597 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:33,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:06:33,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:06:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:06:33,598 INFO L87 Difference]: Start difference. First operand 3715 states and 4995 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) [2021-11-21 00:06:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:40,904 INFO L93 Difference]: Finished difference Result 3714 states and 4993 transitions. [2021-11-21 00:06:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:06:40,905 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 [2021-11-21 00:06:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:40,910 INFO L225 Difference]: With dead ends: 3714 [2021-11-21 00:06:40,911 INFO L226 Difference]: Without dead ends: 3714 [2021-11-21 00:06:40,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:06:40,911 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 4 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:40,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5561 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 00:06:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-11-21 00:06:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3714. [2021-11-21 00:06:40,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 2840 states have (on average 1.7369718309859155) internal successors, (4933), 3684 states have internal predecessors, (4933), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:06:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4993 transitions. [2021-11-21 00:06:40,994 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4993 transitions. Word has length 67 [2021-11-21 00:06:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:40,994 INFO L470 AbstractCegarLoop]: Abstraction has 3714 states and 4993 transitions. [2021-11-21 00:06:40,995 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) [2021-11-21 00:06:40,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4993 transitions. [2021-11-21 00:06:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:06:40,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:40,996 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] [2021-11-21 00:06:41,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:41,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:41,208 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:06:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-21 00:06:41,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:41,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734744639] [2021-11-21 00:06:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:41,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:41,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:41,212 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:41,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-21 00:06:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:41,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:06:41,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:41,722 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 [2021-11-21 00:06:41,749 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 [2021-11-21 00:06:41,761 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 [2021-11-21 00:06:41,843 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 [2021-11-21 00:06:41,847 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 [2021-11-21 00:06:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:41,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:42,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734744639] [2021-11-21 00:06:42,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734744639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:42,226 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:42,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 00:06:42,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014508572] [2021-11-21 00:06:42,226 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:42,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:06:42,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:06:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:06:42,228 INFO L87 Difference]: Start difference. First operand 3714 states and 4993 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) [2021-11-21 00:07:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:07,834 INFO L93 Difference]: Finished difference Result 3713 states and 4991 transitions. [2021-11-21 00:07:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:07:07,835 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 [2021-11-21 00:07:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:07,841 INFO L225 Difference]: With dead ends: 3713 [2021-11-21 00:07:07,841 INFO L226 Difference]: Without dead ends: 3713 [2021-11-21 00:07:07,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:07:07,842 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 3 mSDsluCounter, 5779 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7892 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:07,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7892 Invalid, 4792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2021-11-21 00:07:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-11-21 00:07:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3713. [2021-11-21 00:07:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 2838 states have (on average 1.7374911909795632) internal successors, (4931), 3683 states have internal predecessors, (4931), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:07:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4991 transitions. [2021-11-21 00:07:07,897 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4991 transitions. Word has length 67 [2021-11-21 00:07:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:07,898 INFO L470 AbstractCegarLoop]: Abstraction has 3713 states and 4991 transitions. [2021-11-21 00:07:07,898 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) [2021-11-21 00:07:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4991 transitions. [2021-11-21 00:07:07,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:07:07,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:07,900 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] [2021-11-21 00:07:07,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-21 00:07:08,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:07:08,105 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:07:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-21 00:07:08,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:07:08,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072902904] [2021-11-21 00:07:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:08,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:07:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:07:08,107 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:07:08,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-21 00:07:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:08,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:07:08,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:08,519 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 [2021-11-21 00:07:08,534 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 [2021-11-21 00:07:08,572 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 [2021-11-21 00:07:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:08,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:08,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:07:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072902904] [2021-11-21 00:07:08,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072902904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:08,721 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:08,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:07:08,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239216570] [2021-11-21 00:07:08,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:08,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:07:08,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:07:08,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:07:08,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:07:08,723 INFO L87 Difference]: Start difference. First operand 3713 states and 4991 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) [2021-11-21 00:07:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:16,223 INFO L93 Difference]: Finished difference Result 3712 states and 4988 transitions. [2021-11-21 00:07:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:07:16,224 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 [2021-11-21 00:07:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:16,230 INFO L225 Difference]: With dead ends: 3712 [2021-11-21 00:07:16,230 INFO L226 Difference]: Without dead ends: 3712 [2021-11-21 00:07:16,231 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 [2021-11-21 00:07:16,232 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5556 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:16,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5556 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 00:07:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2021-11-21 00:07:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3712. [2021-11-21 00:07:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2838 states have (on average 1.7364341085271318) internal successors, (4928), 3682 states have internal predecessors, (4928), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:07:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4988 transitions. [2021-11-21 00:07:16,324 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4988 transitions. Word has length 67 [2021-11-21 00:07:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:16,324 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 4988 transitions. [2021-11-21 00:07:16,324 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) [2021-11-21 00:07:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4988 transitions. [2021-11-21 00:07:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:07:16,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:16,326 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] [2021-11-21 00:07:16,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-21 00:07:16,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:07:16,539 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:07:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-21 00:07:16,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:07:16,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441096169] [2021-11-21 00:07:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:16,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:07:16,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:07:16,543 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:07:16,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-21 00:07:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:16,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:07:16,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:17,038 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 [2021-11-21 00:07:17,066 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 [2021-11-21 00:07:17,075 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 [2021-11-21 00:07:17,141 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 [2021-11-21 00:07:17,145 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 [2021-11-21 00:07:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:17,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:17,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:07:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441096169] [2021-11-21 00:07:17,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441096169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:17,546 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:17,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 00:07:17,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580539635] [2021-11-21 00:07:17,546 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:17,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:07:17,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:07:17,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:07:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:07:17,547 INFO L87 Difference]: Start difference. First operand 3712 states and 4988 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) [2021-11-21 00:07:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:34,390 INFO L93 Difference]: Finished difference Result 3711 states and 4985 transitions. [2021-11-21 00:07:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:07:34,391 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 [2021-11-21 00:07:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:34,397 INFO L225 Difference]: With dead ends: 3711 [2021-11-21 00:07:34,398 INFO L226 Difference]: Without dead ends: 3711 [2021-11-21 00:07:34,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:07:34,399 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 4 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:34,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5567 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2021-11-21 00:07:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2021-11-21 00:07:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3711. [2021-11-21 00:07:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2835 states have (on average 1.7372134038800706) internal successors, (4925), 3681 states have internal predecessors, (4925), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:07:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 4985 transitions. [2021-11-21 00:07:34,451 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 4985 transitions. Word has length 67 [2021-11-21 00:07:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:34,452 INFO L470 AbstractCegarLoop]: Abstraction has 3711 states and 4985 transitions. [2021-11-21 00:07:34,452 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) [2021-11-21 00:07:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 4985 transitions. [2021-11-21 00:07:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 00:07:34,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:34,453 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] [2021-11-21 00:07:34,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-21 00:07:34,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:07:34,676 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:07:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1243544783, now seen corresponding path program 1 times [2021-11-21 00:07:34,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:07:34,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380109606] [2021-11-21 00:07:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:34,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:07:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:07:34,679 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:07:34,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-21 00:07:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:34,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:07:34,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:35,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:35,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:07:35,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380109606] [2021-11-21 00:07:35,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380109606] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:35,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:35,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 00:07:35,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580597777] [2021-11-21 00:07:35,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:35,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:07:35,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:07:35,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:07:35,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:07:35,273 INFO L87 Difference]: Start difference. First operand 3711 states and 4985 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) [2021-11-21 00:07:35,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:35,416 INFO L93 Difference]: Finished difference Result 3721 states and 5001 transitions. [2021-11-21 00:07:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:07:35,417 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 [2021-11-21 00:07:35,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:35,424 INFO L225 Difference]: With dead ends: 3721 [2021-11-21 00:07:35,425 INFO L226 Difference]: Without dead ends: 3721 [2021-11-21 00:07:35,425 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 [2021-11-21 00:07:35,426 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 9 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:35,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6320 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:07:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2021-11-21 00:07:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721. [2021-11-21 00:07:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 2843 states have (on average 1.736545902215969) internal successors, (4937), 3690 states have internal predecessors, (4937), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-21 00:07:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5001 transitions. [2021-11-21 00:07:35,484 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5001 transitions. Word has length 75 [2021-11-21 00:07:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:35,485 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5001 transitions. [2021-11-21 00:07:35,485 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) [2021-11-21 00:07:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5001 transitions. [2021-11-21 00:07:35,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 00:07:35,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:35,487 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] [2021-11-21 00:07:35,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-21 00:07:35,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:07:35,703 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:07:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash 520759535, now seen corresponding path program 1 times [2021-11-21 00:07:35,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:07:35,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243015699] [2021-11-21 00:07:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:35,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:07:35,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:07:35,706 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:07:35,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-21 00:07:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:36,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:07:36,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:36,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:36,513 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:07:36,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243015699] [2021-11-21 00:07:36,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243015699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:07:36,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [469238117] [2021-11-21 00:07:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:36,514 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:07:36,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:07:36,515 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:07:36,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-21 00:07:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:36,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:07:36,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:37,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:37,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [469238117] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:07:37,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693954854] [2021-11-21 00:07:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:37,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:07:37,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:07:37,174 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:07:37,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-21 00:07:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:37,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:07:37,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:37,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:37,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693954854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:07:37,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:07:37,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-21 00:07:37,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296392496] [2021-11-21 00:07:37,853 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:07:37,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:07:37,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:07:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:07:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:07:37,854 INFO L87 Difference]: Start difference. First operand 3721 states and 5001 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) [2021-11-21 00:07:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:38,426 INFO L93 Difference]: Finished difference Result 3735 states and 5021 transitions. [2021-11-21 00:07:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:07:38,436 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 [2021-11-21 00:07:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:38,446 INFO L225 Difference]: With dead ends: 3735 [2021-11-21 00:07:38,446 INFO L226 Difference]: Without dead ends: 3729 [2021-11-21 00:07:38,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:07:38,450 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 56 mSDsluCounter, 6319 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:38,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 8428 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:07:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-11-21 00:07:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3727. [2021-11-21 00:07:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2849 states have (on average 1.7353457353457353) internal successors, (4944), 3696 states have internal predecessors, (4944), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2021-11-21 00:07:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5008 transitions. [2021-11-21 00:07:38,515 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5008 transitions. Word has length 77 [2021-11-21 00:07:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:38,515 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5008 transitions. [2021-11-21 00:07:38,515 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) [2021-11-21 00:07:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5008 transitions. [2021-11-21 00:07:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-21 00:07:38,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:38,517 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] [2021-11-21 00:07:38,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-21 00:07:38,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-11-21 00:07:38,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-21 00:07:39,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:07:39,134 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1189 more)] === [2021-11-21 00:07:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash 991095087, now seen corresponding path program 2 times [2021-11-21 00:07:39,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:07:39,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265994912] [2021-11-21 00:07:39,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:07:39,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:07:39,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:07:39,136 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:07:39,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-21 00:07:39,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:07:39,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:07:39,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:07:39,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:39,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:40,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:07:40,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265994912] [2021-11-21 00:07:40,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265994912] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:07:40,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1318221205] [2021-11-21 00:07:40,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:07:40,394 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:07:40,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:07:40,395 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:07:40,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-21 00:07:41,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:07:41,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:07:41,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:07:41,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:41,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:07:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:07:41,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1318221205] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:07:41,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203523378] [2021-11-21 00:07:41,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:07:41,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:07:41,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:07:41,682 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:07:41,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e05e7a-3780-460f-bf25-e17b2238d87e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-21 00:07:56,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:07:56,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:07:56,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:07:56,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:56,860 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 [2021-11-21 00:07:57,154 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:07:57,154 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 [2021-11-21 00:07:57,210 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 [2021-11-21 00:09:44,874 WARN L227 SmtUtils]: Spent 23.53s 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) [2021-11-21 00:09:44,875 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-21 00:09:44,875 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 75 treesize of output 79 [2021-11-21 00:09:45,629 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-21 00:09:45,629 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 125 treesize of output 38 [2021-11-21 00:09:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:09:45,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:09:47,990 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-21 00:09:47,990 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 63 treesize of output 62 [2021-11-21 00:15:17,159 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-21 00:15:17,160 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 108 treesize of output 107 [2021-11-21 00:15:20,590 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$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~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_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_#Ultimate.C_memset_#ptr.base|))) is different from false [2021-11-21 00:15:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:15:37,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203523378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:15:37,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:15:37,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-21 00:15:37,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118197969] [2021-11-21 00:15:37,145 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:15:37,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-21 00:15:37,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:15:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-21 00:15:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1537, Unknown=193, NotChecked=84, Total=1980 [2021-11-21 00:15:37,147 INFO L87 Difference]: Start difference. First operand 3727 states and 5008 transitions. Second operand has 45 states, 43 states have (on average 5.511627906976744) internal successors, (237), 43 states have internal predecessors, (237), 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) [2021-11-21 00:15:43,816 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_120| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr540| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_118| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_116| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr540_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr540_105| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr540|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr540_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false