./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs --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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:58:46,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:58:46,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:58:46,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:58:46,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:58:46,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:58:46,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:58:46,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:58:46,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:58:46,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:58:46,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:58:46,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:58:46,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:58:46,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:58:46,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:58:46,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:58:46,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:58:46,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:58:46,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:58:46,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:58:46,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:58:46,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:58:46,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:58:46,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:58:46,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:58:46,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:58:46,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:58:46,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:58:46,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:58:46,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:58:46,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:58:46,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:58:46,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:58:46,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:58:46,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:58:46,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:58:46,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:58:46,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:58:46,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:58:46,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:58:46,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:58:46,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 13:58:46,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:58:46,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:58:46,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:58:46,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:58:46,943 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:58:46,943 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:58:46,943 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:58:46,944 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:58:46,944 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:58:46,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:58:46,945 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:58:46,946 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:58:46,946 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:58:46,946 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:58:46,947 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:58:46,947 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:58:46,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:58:46,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:58:46,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:58:46,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:58:46,949 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:58:46,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:58:46,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:58:46,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:58:46,950 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:58:46,950 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:58:46,951 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:58:46,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:58:46,951 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:58:46,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:58:46,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:58:46,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:58:46,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:58:46,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:58:46,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:58:46,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:58:46,954 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:58:46,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:58:46,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:58:46,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:58:46,955 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_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-19 13:58:47,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:58:47,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:58:47,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:58:47,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:58:47,307 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:58:47,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-19 13:58:47,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/981825529/fcd5dcb3816f4f3590edb1eac8253470/FLAG3531080fe [2021-11-19 13:58:48,005 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:58:48,006 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-19 13:58:48,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/981825529/fcd5dcb3816f4f3590edb1eac8253470/FLAG3531080fe [2021-11-19 13:58:48,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/981825529/fcd5dcb3816f4f3590edb1eac8253470 [2021-11-19 13:58:48,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:58:48,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:58:48,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:58:48,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:58:48,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:58:48,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:48" (1/1) ... [2021-11-19 13:58:48,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e70101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:48, skipping insertion in model container [2021-11-19 13:58:48,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:48" (1/1) ... [2021-11-19 13:58:48,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:58:48,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:58:48,790 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_88bc0628-cb09-40dc-96aa-b75a97459072/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-19 13:58:49,099 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:58:49,107 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) [2021-11-19 13:58:49,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3009cee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:49, skipping insertion in model container [2021-11-19 13:58:49,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:58:49,109 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:58:49,111 INFO L158 Benchmark]: Toolchain (without parser) took 929.53ms. Allocated memory is still 104.9MB. Free memory was 81.8MB in the beginning and 53.7MB in the end (delta: 28.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-11-19 13:58:49,111 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 57.3MB in the beginning and 57.3MB in the end (delta: 35.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:58:49,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 924.64ms. Allocated memory is still 104.9MB. Free memory was 81.8MB in the beginning and 53.7MB in the end (delta: 28.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-11-19 13:58:49,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 57.3MB in the beginning and 57.3MB in the end (delta: 35.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 924.64ms. Allocated memory is still 104.9MB. Free memory was 81.8MB in the beginning and 53.7MB in the end (delta: 28.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs --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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:58:51,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:58:51,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:58:51,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:58:51,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:58:51,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:58:51,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:58:51,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:58:51,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:58:51,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:58:51,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:58:51,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:58:51,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:58:51,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:58:51,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:58:51,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:58:51,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:58:51,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:58:51,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:58:51,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:58:51,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:58:51,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:58:51,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:58:51,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:58:51,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:58:51,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:58:51,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:58:51,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:58:51,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:58:51,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:58:51,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:58:51,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:58:51,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:58:51,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:58:51,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:58:51,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:58:51,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:58:51,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:58:51,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:58:51,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:58:51,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:58:51,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 13:58:51,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:58:51,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:58:51,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:58:51,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:58:51,476 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:58:51,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:58:51,476 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:58:51,477 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:58:51,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:58:51,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:58:51,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:58:51,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:58:51,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:58:51,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:58:51,479 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:58:51,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:58:51,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:58:51,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:58:51,480 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:58:51,480 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:58:51,480 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:58:51,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:58:51,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:58:51,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:58:51,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:58:51,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:58:51,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:58:51,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:58:51,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:58:51,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:58:51,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:58:51,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:58:51,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:58:51,483 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:58:51,483 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:58:51,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:58:51,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:58:51,484 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_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-19 13:58:51,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:58:51,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:58:51,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:58:51,868 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:58:51,868 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:58:51,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-19 13:58:51,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/02580e9ca/8fffb6b263fb4d28a5ee0c16a908fe1b/FLAG927cef418 [2021-11-19 13:58:52,719 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:58:52,723 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-19 13:58:52,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/02580e9ca/8fffb6b263fb4d28a5ee0c16a908fe1b/FLAG927cef418 [2021-11-19 13:58:52,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/data/02580e9ca/8fffb6b263fb4d28a5ee0c16a908fe1b [2021-11-19 13:58:52,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:58:52,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:58:52,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:58:52,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:58:52,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:58:52,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:52" (1/1) ... [2021-11-19 13:58:52,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677d44ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:52, skipping insertion in model container [2021-11-19 13:58:52,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:52" (1/1) ... [2021-11-19 13:58:52,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:58:52,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:58:53,460 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_88bc0628-cb09-40dc-96aa-b75a97459072/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-19 13:58:53,772 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:58:53,784 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:58:53,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:58:53,823 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_88bc0628-cb09-40dc-96aa-b75a97459072/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-19 13:58:53,917 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:58:53,922 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:58:53,945 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_88bc0628-cb09-40dc-96aa-b75a97459072/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-19 13:58:54,058 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:58:54,104 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:58:54,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54 WrapperNode [2021-11-19 13:58:54,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:58:54,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:58:54,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:58:54,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:58:54,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,262 INFO L137 Inliner]: procedures = 180, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2348 [2021-11-19 13:58:54,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:58:54,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:58:54,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:58:54,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:58:54,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:58:54,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:58:54,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:58:54,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:58:54,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (1/1) ... [2021-11-19 13:58:54,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:58:54,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:58:54,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:58:54,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:58:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:58:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 13:58:54,606 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 13:58:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:58:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:58:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:58:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:58:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:58:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:58:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:58:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:58:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:58:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:58:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:58:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:58:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:58:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:58:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:58:54,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:58:54,969 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:58:54,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:58:54,975 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:59:04,876 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:59:04,902 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:59:04,902 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-19 13:59:04,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:04 BoogieIcfgContainer [2021-11-19 13:59:04,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:59:04,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:59:04,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:59:04,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:59:04,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:58:52" (1/3) ... [2021-11-19 13:59:04,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77511037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:04, skipping insertion in model container [2021-11-19 13:59:04,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:54" (2/3) ... [2021-11-19 13:59:04,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77511037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:04, skipping insertion in model container [2021-11-19 13:59:04,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:04" (3/3) ... [2021-11-19 13:59:04,915 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2021-11-19 13:59:04,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:59:04,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2021-11-19 13:59:04,966 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:59:04,973 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 [2021-11-19 13:59:04,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2021-11-19 13:59:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 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) [2021-11-19 13:59:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:59:05,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:05,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:59:05,042 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-19 13:59:05,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:05,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832217461] [2021-11-19 13:59:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:05,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:05,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:05,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:05,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:59:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:05,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:59:05,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:05,412 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 [2021-11-19 13:59:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:05,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:05,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:05,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832217461] [2021-11-19 13:59:05,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832217461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:05,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:05,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:59:05,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222202379] [2021-11-19 13:59:05,471 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:05,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:59:05,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:59:05,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:59:05,552 INFO L87 Difference]: Start difference. First operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 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) [2021-11-19 13:59:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:10,341 INFO L93 Difference]: Finished difference Result 2934 states and 3120 transitions. [2021-11-19 13:59:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:10,343 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 [2021-11-19 13:59:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:10,377 INFO L225 Difference]: With dead ends: 2934 [2021-11-19 13:59:10,377 INFO L226 Difference]: Without dead ends: 2932 [2021-11-19 13:59:10,379 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 [2021-11-19 13:59:10,382 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 2142 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:10,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1869 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-19 13:59:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-11-19 13:59:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2401. [2021-11-19 13:59:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1318 states have (on average 2.0515933232169954) internal successors, (2704), 2385 states have internal predecessors, (2704), 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) [2021-11-19 13:59:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 2736 transitions. [2021-11-19 13:59:10,528 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 2736 transitions. Word has length 3 [2021-11-19 13:59:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:10,529 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 2736 transitions. [2021-11-19 13:59:10,529 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) [2021-11-19 13:59:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 2736 transitions. [2021-11-19 13:59:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:59:10,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:10,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:59:10,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:59:10,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:10,742 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-19 13:59:10,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:10,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194577115] [2021-11-19 13:59:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:10,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:10,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:10,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:59:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:10,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:59:10,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:10,968 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 [2021-11-19 13:59:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:10,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:11,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:11,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194577115] [2021-11-19 13:59:11,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194577115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:11,056 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:11,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:59:11,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909904127] [2021-11-19 13:59:11,057 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:11,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:59:11,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:59:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:59:11,062 INFO L87 Difference]: Start difference. First operand 2401 states and 2736 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) [2021-11-19 13:59:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:21,204 INFO L93 Difference]: Finished difference Result 3701 states and 4147 transitions. [2021-11-19 13:59:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:59:21,206 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 [2021-11-19 13:59:21,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:21,226 INFO L225 Difference]: With dead ends: 3701 [2021-11-19 13:59:21,226 INFO L226 Difference]: Without dead ends: 3701 [2021-11-19 13:59:21,226 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 [2021-11-19 13:59:21,228 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 2670 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:21,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2678 Valid, 3520 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2021-11-19 13:59:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2021-11-19 13:59:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2565. [2021-11-19 13:59:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 1494 states have (on average 2.038821954484605) internal successors, (3046), 2549 states have internal predecessors, (3046), 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) [2021-11-19 13:59:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3078 transitions. [2021-11-19 13:59:21,308 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3078 transitions. Word has length 3 [2021-11-19 13:59:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:21,308 INFO L470 AbstractCegarLoop]: Abstraction has 2565 states and 3078 transitions. [2021-11-19 13:59:21,308 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) [2021-11-19 13:59:21,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3078 transitions. [2021-11-19 13:59:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:59:21,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:21,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:21,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:21,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:21,522 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-19 13:59:21,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:21,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649071053] [2021-11-19 13:59:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:21,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:21,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:21,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:59:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:21,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:59:21,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:21,756 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 [2021-11-19 13:59:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:21,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:21,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:21,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649071053] [2021-11-19 13:59:21,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649071053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:21,797 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:21,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:59:21,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231689352] [2021-11-19 13:59:21,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:21,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:59:21,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:59:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:59:21,798 INFO L87 Difference]: Start difference. First operand 2565 states and 3078 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) [2021-11-19 13:59:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:25,691 INFO L93 Difference]: Finished difference Result 3303 states and 3816 transitions. [2021-11-19 13:59:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:25,693 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 [2021-11-19 13:59:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:25,709 INFO L225 Difference]: With dead ends: 3303 [2021-11-19 13:59:25,710 INFO L226 Difference]: Without dead ends: 3303 [2021-11-19 13:59:25,710 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 [2021-11-19 13:59:25,711 INFO L933 BasicCegarLoop]: 2161 mSDtfsCounter, 1987 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:25,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2909 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 13:59:25,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-11-19 13:59:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2474. [2021-11-19 13:59:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 1494 states have (on average 1.9551539491298529) internal successors, (2921), 2458 states have internal predecessors, (2921), 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) [2021-11-19 13:59:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 2953 transitions. [2021-11-19 13:59:25,780 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 2953 transitions. Word has length 8 [2021-11-19 13:59:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:25,780 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 2953 transitions. [2021-11-19 13:59:25,781 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) [2021-11-19 13:59:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 2953 transitions. [2021-11-19 13:59:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:59:25,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:25,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:25,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:26,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:26,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-19 13:59:26,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:26,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132162642] [2021-11-19 13:59:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:26,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:26,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:26,009 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:26,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:59:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:26,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:59:26,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:26,215 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 [2021-11-19 13:59:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:26,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:26,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:26,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132162642] [2021-11-19 13:59:26,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132162642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:26,343 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:26,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:59:26,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486054221] [2021-11-19 13:59:26,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:26,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:59:26,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:26,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:59:26,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:59:26,345 INFO L87 Difference]: Start difference. First operand 2474 states and 2953 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) [2021-11-19 13:59:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:35,970 INFO L93 Difference]: Finished difference Result 3429 states and 3844 transitions. [2021-11-19 13:59:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:59:35,971 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 [2021-11-19 13:59:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:35,988 INFO L225 Difference]: With dead ends: 3429 [2021-11-19 13:59:35,988 INFO L226 Difference]: Without dead ends: 3429 [2021-11-19 13:59:35,989 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 [2021-11-19 13:59:35,990 INFO L933 BasicCegarLoop]: 2491 mSDtfsCounter, 1441 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:35,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 4655 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-19 13:59:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2021-11-19 13:59:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2466. [2021-11-19 13:59:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1496 states have (on average 1.9391711229946524) internal successors, (2901), 2450 states have internal predecessors, (2901), 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) [2021-11-19 13:59:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 2933 transitions. [2021-11-19 13:59:36,054 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 2933 transitions. Word has length 8 [2021-11-19 13:59:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:36,055 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 2933 transitions. [2021-11-19 13:59:36,055 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) [2021-11-19 13:59:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 2933 transitions. [2021-11-19 13:59:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:59:36,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:36,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:36,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:36,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:36,267 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-19 13:59:36,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:36,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518513147] [2021-11-19 13:59:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:36,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:36,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:36,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:36,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:59:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:36,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:59:36,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:36,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:36,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:36,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518513147] [2021-11-19 13:59:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518513147] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:36,520 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:36,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:59:36,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817687067] [2021-11-19 13:59:36,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:36,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:59:36,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:59:36,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:59:36,522 INFO L87 Difference]: Start difference. First operand 2466 states and 2933 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) [2021-11-19 13:59:36,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:36,575 INFO L93 Difference]: Finished difference Result 2424 states and 2890 transitions. [2021-11-19 13:59:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:36,576 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 [2021-11-19 13:59:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:36,588 INFO L225 Difference]: With dead ends: 2424 [2021-11-19 13:59:36,589 INFO L226 Difference]: Without dead ends: 2424 [2021-11-19 13:59:36,589 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 [2021-11-19 13:59:36,590 INFO L933 BasicCegarLoop]: 2210 mSDtfsCounter, 1006 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 4630 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 [2021-11-19 13:59:36,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1010 Valid, 4630 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:59:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-11-19 13:59:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2424. [2021-11-19 13:59:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1478 states have (on average 1.9336941813261164) internal successors, (2858), 2408 states have internal predecessors, (2858), 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) [2021-11-19 13:59:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 2890 transitions. [2021-11-19 13:59:36,644 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 2890 transitions. Word has length 11 [2021-11-19 13:59:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:36,645 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 2890 transitions. [2021-11-19 13:59:36,645 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) [2021-11-19 13:59:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 2890 transitions. [2021-11-19 13:59:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:59:36,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:36,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:36,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:36,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:36,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-19 13:59:36,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:36,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329054997] [2021-11-19 13:59:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:36,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:36,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:36,862 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:36,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:59:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:37,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:59:37,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:37,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:37,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:37,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329054997] [2021-11-19 13:59:37,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329054997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:37,125 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:37,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:59:37,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320991767] [2021-11-19 13:59:37,125 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:37,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:59:37,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:59:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:59:37,127 INFO L87 Difference]: Start difference. First operand 2424 states and 2890 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) [2021-11-19 13:59:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:37,234 INFO L93 Difference]: Finished difference Result 2403 states and 2862 transitions. [2021-11-19 13:59:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:59:37,235 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 [2021-11-19 13:59:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:37,247 INFO L225 Difference]: With dead ends: 2403 [2021-11-19 13:59:37,248 INFO L226 Difference]: Without dead ends: 2403 [2021-11-19 13:59:37,248 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 [2021-11-19 13:59:37,249 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 977 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 6743 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 [2021-11-19 13:59:37,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 6743 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:59:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-11-19 13:59:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2402. [2021-11-19 13:59:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1470 states have (on average 1.9244897959183673) internal successors, (2829), 2386 states have internal predecessors, (2829), 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) [2021-11-19 13:59:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2861 transitions. [2021-11-19 13:59:37,337 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2861 transitions. Word has length 13 [2021-11-19 13:59:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:37,338 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 2861 transitions. [2021-11-19 13:59:37,339 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) [2021-11-19 13:59:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2861 transitions. [2021-11-19 13:59:37,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:59:37,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:37,340 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] [2021-11-19 13:59:37,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:37,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:37,552 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-19 13:59:37,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:37,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166881241] [2021-11-19 13:59:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:37,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:37,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:37,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:37,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:59:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:37,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:59:37,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:37,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:37,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:37,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:37,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166881241] [2021-11-19 13:59:37,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166881241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:37,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:37,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:59:37,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947518220] [2021-11-19 13:59:37,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:37,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:59:37,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:59:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:59:37,863 INFO L87 Difference]: Start difference. First operand 2402 states and 2861 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) [2021-11-19 13:59:37,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:37,952 INFO L93 Difference]: Finished difference Result 3878 states and 4485 transitions. [2021-11-19 13:59:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:37,953 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 [2021-11-19 13:59:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:37,972 INFO L225 Difference]: With dead ends: 3878 [2021-11-19 13:59:37,972 INFO L226 Difference]: Without dead ends: 3878 [2021-11-19 13:59:37,973 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 [2021-11-19 13:59:37,974 INFO L933 BasicCegarLoop]: 3487 mSDtfsCounter, 4182 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:37,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 5105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:59:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-11-19 13:59:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 2360. [2021-11-19 13:59:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1452 states have (on average 1.918732782369146) internal successors, (2786), 2344 states have internal predecessors, (2786), 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) [2021-11-19 13:59:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 2818 transitions. [2021-11-19 13:59:38,036 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 2818 transitions. Word has length 20 [2021-11-19 13:59:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:38,037 INFO L470 AbstractCegarLoop]: Abstraction has 2360 states and 2818 transitions. [2021-11-19 13:59:38,037 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) [2021-11-19 13:59:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 2818 transitions. [2021-11-19 13:59:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:59:38,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:38,039 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] [2021-11-19 13:59:38,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:38,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:38,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:38,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:38,252 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-19 13:59:38,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:38,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655155163] [2021-11-19 13:59:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:38,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:38,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:38,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:59:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:38,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:59:38,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:38,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:38,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:38,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655155163] [2021-11-19 13:59:38,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655155163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:38,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:38,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:59:38,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371531606] [2021-11-19 13:59:38,530 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:38,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:59:38,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:38,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:59:38,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:59:38,533 INFO L87 Difference]: Start difference. First operand 2360 states and 2818 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) [2021-11-19 13:59:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:38,594 INFO L93 Difference]: Finished difference Result 3751 states and 4304 transitions. [2021-11-19 13:59:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:38,595 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 [2021-11-19 13:59:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:38,614 INFO L225 Difference]: With dead ends: 3751 [2021-11-19 13:59:38,614 INFO L226 Difference]: Without dead ends: 3751 [2021-11-19 13:59:38,615 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 [2021-11-19 13:59:38,615 INFO L933 BasicCegarLoop]: 3395 mSDtfsCounter, 2048 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 6531 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 [2021-11-19 13:59:38,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 6531 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:59:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-11-19 13:59:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 2282. [2021-11-19 13:59:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 1398 states have (on average 1.9005722460658083) internal successors, (2657), 2266 states have internal predecessors, (2657), 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) [2021-11-19 13:59:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2689 transitions. [2021-11-19 13:59:38,687 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2689 transitions. Word has length 20 [2021-11-19 13:59:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:38,687 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 2689 transitions. [2021-11-19 13:59:38,687 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) [2021-11-19 13:59:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2689 transitions. [2021-11-19 13:59:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 13:59:38,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:38,690 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] [2021-11-19 13:59:38,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:38,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:38,903 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-19 13:59:38,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:38,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226198047] [2021-11-19 13:59:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:38,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:38,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:38,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:38,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:59:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:39,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:59:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:39,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:39,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:39,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226198047] [2021-11-19 13:59:39,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226198047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:39,221 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:39,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:59:39,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009686804] [2021-11-19 13:59:39,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:39,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:59:39,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:59:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:59:39,223 INFO L87 Difference]: Start difference. First operand 2282 states and 2689 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) [2021-11-19 13:59:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:39,344 INFO L93 Difference]: Finished difference Result 3737 states and 4285 transitions. [2021-11-19 13:59:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:59:39,344 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 [2021-11-19 13:59:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:39,356 INFO L225 Difference]: With dead ends: 3737 [2021-11-19 13:59:39,357 INFO L226 Difference]: Without dead ends: 3737 [2021-11-19 13:59:39,357 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 [2021-11-19 13:59:39,358 INFO L933 BasicCegarLoop]: 3356 mSDtfsCounter, 4028 mSDsluCounter, 4924 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4038 SdHoareTripleChecker+Valid, 8280 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 [2021-11-19 13:59:39,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4038 Valid, 8280 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:59:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-19 13:59:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 2260. [2021-11-19 13:59:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1390 states have (on average 1.8906474820143886) internal successors, (2628), 2244 states have internal predecessors, (2628), 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) [2021-11-19 13:59:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 2660 transitions. [2021-11-19 13:59:39,411 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 2660 transitions. Word has length 22 [2021-11-19 13:59:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:39,411 INFO L470 AbstractCegarLoop]: Abstraction has 2260 states and 2660 transitions. [2021-11-19 13:59:39,411 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) [2021-11-19 13:59:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 2660 transitions. [2021-11-19 13:59:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 13:59:39,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:39,412 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] [2021-11-19 13:59:39,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:39,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:39,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-19 13:59:39,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:39,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429116072] [2021-11-19 13:59:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:39,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:39,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:39,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:39,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:59:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:39,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:59:39,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:39,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:39,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:39,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429116072] [2021-11-19 13:59:39,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429116072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:39,939 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:39,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:59:39,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981641159] [2021-11-19 13:59:39,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:39,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:59:39,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:39,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:59:39,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:59:39,941 INFO L87 Difference]: Start difference. First operand 2260 states and 2660 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) [2021-11-19 13:59:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:40,058 INFO L93 Difference]: Finished difference Result 3672 states and 4162 transitions. [2021-11-19 13:59:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:59:40,059 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 [2021-11-19 13:59:40,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:40,098 INFO L225 Difference]: With dead ends: 3672 [2021-11-19 13:59:40,098 INFO L226 Difference]: Without dead ends: 3672 [2021-11-19 13:59:40,098 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 [2021-11-19 13:59:40,099 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 1984 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 10063 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 [2021-11-19 13:59:40,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 10063 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:59:40,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-11-19 13:59:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2222. [2021-11-19 13:59:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1366 states have (on average 1.8601756954612005) internal successors, (2541), 2206 states have internal predecessors, (2541), 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) [2021-11-19 13:59:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2573 transitions. [2021-11-19 13:59:40,146 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2573 transitions. Word has length 22 [2021-11-19 13:59:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:40,146 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 2573 transitions. [2021-11-19 13:59:40,147 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) [2021-11-19 13:59:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2573 transitions. [2021-11-19 13:59:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:59:40,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:40,148 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] [2021-11-19 13:59:40,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:40,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:40,360 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-19 13:59:40,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:40,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319442910] [2021-11-19 13:59:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:40,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:40,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:40,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:40,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:59:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:40,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:59:40,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:40,562 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 [2021-11-19 13:59:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:40,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:40,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:40,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319442910] [2021-11-19 13:59:40,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319442910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:40,783 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:40,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:59:40,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908616467] [2021-11-19 13:59:40,783 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:40,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:59:40,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:59:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:59:40,785 INFO L87 Difference]: Start difference. First operand 2222 states and 2573 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) [2021-11-19 13:59:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:44,473 INFO L93 Difference]: Finished difference Result 2674 states and 2936 transitions. [2021-11-19 13:59:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:59:44,474 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 [2021-11-19 13:59:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:44,480 INFO L225 Difference]: With dead ends: 2674 [2021-11-19 13:59:44,480 INFO L226 Difference]: Without dead ends: 2674 [2021-11-19 13:59:44,481 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 [2021-11-19 13:59:44,481 INFO L933 BasicCegarLoop]: 1243 mSDtfsCounter, 2729 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:44,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 2340 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 13:59:44,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-11-19 13:59:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2218. [2021-11-19 13:59:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 1366 states have (on average 1.857247437774524) internal successors, (2537), 2202 states have internal predecessors, (2537), 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) [2021-11-19 13:59:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 2569 transitions. [2021-11-19 13:59:44,522 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 2569 transitions. Word has length 27 [2021-11-19 13:59:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:44,523 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 2569 transitions. [2021-11-19 13:59:44,523 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) [2021-11-19 13:59:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 2569 transitions. [2021-11-19 13:59:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:59:44,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:44,524 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] [2021-11-19 13:59:44,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:44,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:44,735 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-19 13:59:44,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:44,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147654386] [2021-11-19 13:59:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:44,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:44,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:44,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:59:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:44,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:59:44,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:44,937 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 [2021-11-19 13:59:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:45,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:45,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:45,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147654386] [2021-11-19 13:59:45,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147654386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:45,566 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:45,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:59:45,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829925055] [2021-11-19 13:59:45,566 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:45,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:59:45,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:45,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:59:45,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:59:45,567 INFO L87 Difference]: Start difference. First operand 2218 states and 2569 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) [2021-11-19 13:59:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:57,984 INFO L93 Difference]: Finished difference Result 3215 states and 3552 transitions. [2021-11-19 13:59:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:57,986 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 [2021-11-19 13:59:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:57,992 INFO L225 Difference]: With dead ends: 3215 [2021-11-19 13:59:57,992 INFO L226 Difference]: Without dead ends: 3215 [2021-11-19 13:59:57,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:59:57,993 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 4179 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:57,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4179 Valid, 4555 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2021-11-19 13:59:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-11-19 13:59:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2251. [2021-11-19 13:59:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1400 states have (on average 1.8385714285714285) internal successors, (2574), 2235 states have internal predecessors, (2574), 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) [2021-11-19 13:59:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 2606 transitions. [2021-11-19 13:59:58,033 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 2606 transitions. Word has length 27 [2021-11-19 13:59:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:58,033 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 2606 transitions. [2021-11-19 13:59:58,034 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) [2021-11-19 13:59:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 2606 transitions. [2021-11-19 13:59:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:59:58,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:58,035 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] [2021-11-19 13:59:58,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:58,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:58,246 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:59:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-19 13:59:58,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:58,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843780947] [2021-11-19 13:59:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:58,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:58,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:58,248 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:58,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:59:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:58,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:59:58,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:58,439 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 [2021-11-19 13:59:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:58,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:58,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:58,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843780947] [2021-11-19 13:59:58,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843780947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:58,656 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:58,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:59:58,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706372616] [2021-11-19 13:59:58,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:58,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:59:58,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:59:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:59:58,657 INFO L87 Difference]: Start difference. First operand 2251 states and 2606 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) [2021-11-19 14:00:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:04,092 INFO L93 Difference]: Finished difference Result 4335 states and 4885 transitions. [2021-11-19 14:00:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:00:04,092 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 [2021-11-19 14:00:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:04,101 INFO L225 Difference]: With dead ends: 4335 [2021-11-19 14:00:04,102 INFO L226 Difference]: Without dead ends: 4335 [2021-11-19 14:00:04,102 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 [2021-11-19 14:00:04,103 INFO L933 BasicCegarLoop]: 2413 mSDtfsCounter, 4087 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:04,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4094 Valid, 4520 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-19 14:00:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2021-11-19 14:00:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 2247. [2021-11-19 14:00:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 1400 states have (on average 1.8357142857142856) internal successors, (2570), 2231 states have internal predecessors, (2570), 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) [2021-11-19 14:00:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2602 transitions. [2021-11-19 14:00:04,145 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2602 transitions. Word has length 36 [2021-11-19 14:00:04,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:04,145 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 2602 transitions. [2021-11-19 14:00:04,146 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) [2021-11-19 14:00:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2602 transitions. [2021-11-19 14:00:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 14:00:04,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:04,147 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] [2021-11-19 14:00:04,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:04,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:04,358 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-19 14:00:04,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:04,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223143858] [2021-11-19 14:00:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:04,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:04,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:04,362 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:04,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:00:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:04,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:00:04,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:04,628 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 [2021-11-19 14:00:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:04,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:05,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:05,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223143858] [2021-11-19 14:00:05,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223143858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:05,329 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:05,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:00:05,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366677130] [2021-11-19 14:00:05,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:05,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:05,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:00:05,330 INFO L87 Difference]: Start difference. First operand 2247 states and 2602 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) [2021-11-19 14:00:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:21,834 INFO L93 Difference]: Finished difference Result 4238 states and 4664 transitions. [2021-11-19 14:00:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:00:21,836 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 [2021-11-19 14:00:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:21,844 INFO L225 Difference]: With dead ends: 4238 [2021-11-19 14:00:21,844 INFO L226 Difference]: Without dead ends: 4238 [2021-11-19 14:00:21,845 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 [2021-11-19 14:00:21,846 INFO L933 BasicCegarLoop]: 2733 mSDtfsCounter, 2995 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 7951 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:21,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3000 Valid, 7951 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5330 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2021-11-19 14:00:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2021-11-19 14:00:21,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 2243. [2021-11-19 14:00:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 1400 states have (on average 1.832857142857143) internal successors, (2566), 2227 states have internal predecessors, (2566), 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) [2021-11-19 14:00:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2598 transitions. [2021-11-19 14:00:21,884 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2598 transitions. Word has length 36 [2021-11-19 14:00:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:21,885 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 2598 transitions. [2021-11-19 14:00:21,885 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) [2021-11-19 14:00:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2598 transitions. [2021-11-19 14:00:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 14:00:21,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:21,886 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] [2021-11-19 14:00:21,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:22,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:22,098 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:22,098 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-19 14:00:22,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:22,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869866453] [2021-11-19 14:00:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:22,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:22,100 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:22,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:00:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:22,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:22,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:22,343 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 [2021-11-19 14:00:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:22,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:22,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:22,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869866453] [2021-11-19 14:00:22,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869866453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:22,560 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:22,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:00:22,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197109306] [2021-11-19 14:00:22,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:22,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:22,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:00:22,562 INFO L87 Difference]: Start difference. First operand 2243 states and 2598 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) [2021-11-19 14:00:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:28,411 INFO L93 Difference]: Finished difference Result 4691 states and 5257 transitions. [2021-11-19 14:00:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:00:28,411 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 [2021-11-19 14:00:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:28,419 INFO L225 Difference]: With dead ends: 4691 [2021-11-19 14:00:28,419 INFO L226 Difference]: Without dead ends: 4691 [2021-11-19 14:00:28,419 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 [2021-11-19 14:00:28,420 INFO L933 BasicCegarLoop]: 2250 mSDtfsCounter, 4653 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:28,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4663 Valid, 4546 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-19 14:00:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-11-19 14:00:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 2240. [2021-11-19 14:00:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1400 states have (on average 1.825) internal successors, (2555), 2224 states have internal predecessors, (2555), 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) [2021-11-19 14:00:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2587 transitions. [2021-11-19 14:00:28,476 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2587 transitions. Word has length 36 [2021-11-19 14:00:28,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:28,476 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 2587 transitions. [2021-11-19 14:00:28,477 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) [2021-11-19 14:00:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2587 transitions. [2021-11-19 14:00:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 14:00:28,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:28,478 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] [2021-11-19 14:00:28,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:28,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:28,694 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-19 14:00:28,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:28,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33936724] [2021-11-19 14:00:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:28,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:28,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:28,698 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:28,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:00:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:28,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:00:28,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:28,946 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 [2021-11-19 14:00:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:29,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:29,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:29,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33936724] [2021-11-19 14:00:29,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33936724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:29,613 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:29,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:00:29,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693405051] [2021-11-19 14:00:29,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:29,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:29,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:00:29,615 INFO L87 Difference]: Start difference. First operand 2240 states and 2587 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) [2021-11-19 14:00:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:48,866 INFO L93 Difference]: Finished difference Result 4636 states and 5142 transitions. [2021-11-19 14:00:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:00:48,868 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 [2021-11-19 14:00:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:48,874 INFO L225 Difference]: With dead ends: 4636 [2021-11-19 14:00:48,874 INFO L226 Difference]: Without dead ends: 4636 [2021-11-19 14:00:48,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:48,875 INFO L933 BasicCegarLoop]: 2511 mSDtfsCounter, 4787 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 4588 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4792 SdHoareTripleChecker+Valid, 7001 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:48,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4792 Valid, 7001 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4588 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2021-11-19 14:00:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-11-19 14:00:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 2240. [2021-11-19 14:00:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1400 states have (on average 1.822142857142857) internal successors, (2551), 2224 states have internal predecessors, (2551), 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) [2021-11-19 14:00:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2583 transitions. [2021-11-19 14:00:48,917 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2583 transitions. Word has length 36 [2021-11-19 14:00:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:48,917 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 2583 transitions. [2021-11-19 14:00:48,918 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) [2021-11-19 14:00:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2583 transitions. [2021-11-19 14:00:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 14:00:48,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:48,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:48,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:49,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:49,131 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-19 14:00:49,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:49,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504774825] [2021-11-19 14:00:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:49,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:49,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:49,134 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:49,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:00:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:49,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:49,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:49,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:49,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:49,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504774825] [2021-11-19 14:00:49,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504774825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:49,509 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:49,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:00:49,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241374205] [2021-11-19 14:00:49,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:49,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:49,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:00:49,510 INFO L87 Difference]: Start difference. First operand 2240 states and 2583 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) [2021-11-19 14:00:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:49,582 INFO L93 Difference]: Finished difference Result 2234 states and 2569 transitions. [2021-11-19 14:00:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:00:49,583 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 [2021-11-19 14:00:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:49,585 INFO L225 Difference]: With dead ends: 2234 [2021-11-19 14:00:49,585 INFO L226 Difference]: Without dead ends: 2234 [2021-11-19 14:00:49,585 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 [2021-11-19 14:00:49,586 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 959 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 5013 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 [2021-11-19 14:00:49,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 5013 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:00:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-11-19 14:00:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2234. [2021-11-19 14:00:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 1394 states have (on average 1.8199426111908177) internal successors, (2537), 2218 states have internal predecessors, (2537), 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) [2021-11-19 14:00:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2569 transitions. [2021-11-19 14:00:49,611 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2569 transitions. Word has length 40 [2021-11-19 14:00:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:49,611 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 2569 transitions. [2021-11-19 14:00:49,611 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) [2021-11-19 14:00:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2569 transitions. [2021-11-19 14:00:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 14:00:49,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:49,612 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] [2021-11-19 14:00:49,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:49,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:49,820 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-19 14:00:49,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:49,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185332121] [2021-11-19 14:00:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:49,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:49,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:49,822 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:49,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:00:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:49,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:49,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:50,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:50,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:50,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185332121] [2021-11-19 14:00:50,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185332121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:50,624 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:50,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:00:50,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145336227] [2021-11-19 14:00:50,624 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:50,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:50,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:50,628 INFO L87 Difference]: Start difference. First operand 2234 states and 2569 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) [2021-11-19 14:00:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:50,970 INFO L93 Difference]: Finished difference Result 3574 states and 4035 transitions. [2021-11-19 14:00:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:50,971 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 [2021-11-19 14:00:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:50,974 INFO L225 Difference]: With dead ends: 3574 [2021-11-19 14:00:50,974 INFO L226 Difference]: Without dead ends: 3574 [2021-11-19 14:00:50,974 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 [2021-11-19 14:00:50,975 INFO L933 BasicCegarLoop]: 2084 mSDtfsCounter, 1378 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:50,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 3926 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:00:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-19 14:00:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2953. [2021-11-19 14:00:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 2109 states have (on average 1.7946894262683737) internal successors, (3785), 2930 states have internal predecessors, (3785), 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) [2021-11-19 14:00:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 3831 transitions. [2021-11-19 14:00:51,015 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 3831 transitions. Word has length 48 [2021-11-19 14:00:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:51,016 INFO L470 AbstractCegarLoop]: Abstraction has 2953 states and 3831 transitions. [2021-11-19 14:00:51,016 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) [2021-11-19 14:00:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 3831 transitions. [2021-11-19 14:00:51,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 14:00:51,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:51,017 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] [2021-11-19 14:00:51,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-19 14:00:51,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:51,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-19 14:00:51,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:51,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188418038] [2021-11-19 14:00:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:51,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:51,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:51,231 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:51,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:00:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:51,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:51,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:51,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:51,607 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:51,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188418038] [2021-11-19 14:00:51,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188418038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:51,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:51,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:00:51,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136673839] [2021-11-19 14:00:51,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:51,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:51,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:51,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:51,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:00:51,610 INFO L87 Difference]: Start difference. First operand 2953 states and 3831 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) [2021-11-19 14:00:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:51,675 INFO L93 Difference]: Finished difference Result 4103 states and 5047 transitions. [2021-11-19 14:00:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:00:51,675 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 [2021-11-19 14:00:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:51,679 INFO L225 Difference]: With dead ends: 4103 [2021-11-19 14:00:51,679 INFO L226 Difference]: Without dead ends: 4103 [2021-11-19 14:00:51,680 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 [2021-11-19 14:00:51,680 INFO L933 BasicCegarLoop]: 3270 mSDtfsCounter, 1953 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 7837 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 [2021-11-19 14:00:51,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 7837 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:00:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2021-11-19 14:00:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 2929. [2021-11-19 14:00:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2085 states have (on average 1.7961630695443644) internal successors, (3745), 2906 states have internal predecessors, (3745), 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) [2021-11-19 14:00:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3791 transitions. [2021-11-19 14:00:51,728 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3791 transitions. Word has length 51 [2021-11-19 14:00:51,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:51,728 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 3791 transitions. [2021-11-19 14:00:51,729 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) [2021-11-19 14:00:51,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3791 transitions. [2021-11-19 14:00:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 14:00:51,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:51,730 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] [2021-11-19 14:00:51,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:51,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:51,943 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-19 14:00:51,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:51,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180502788] [2021-11-19 14:00:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:51,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:51,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:51,945 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:51,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:00:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:52,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:52,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:52,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:52,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:52,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180502788] [2021-11-19 14:00:52,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180502788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:52,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:52,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:00:52,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330494567] [2021-11-19 14:00:52,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:52,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:52,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:52,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:52,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:00:52,442 INFO L87 Difference]: Start difference. First operand 2929 states and 3791 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) [2021-11-19 14:00:52,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:52,525 INFO L93 Difference]: Finished difference Result 3848 states and 4545 transitions. [2021-11-19 14:00:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:00:52,526 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 [2021-11-19 14:00:52,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:52,531 INFO L225 Difference]: With dead ends: 3848 [2021-11-19 14:00:52,531 INFO L226 Difference]: Without dead ends: 3848 [2021-11-19 14:00:52,532 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 [2021-11-19 14:00:52,533 INFO L933 BasicCegarLoop]: 3311 mSDtfsCounter, 1944 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 7969 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 [2021-11-19 14:00:52,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 7969 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:00:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-11-19 14:00:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 2917. [2021-11-19 14:00:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2073 states have (on average 1.7969126869271588) internal successors, (3725), 2894 states have internal predecessors, (3725), 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) [2021-11-19 14:00:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3771 transitions. [2021-11-19 14:00:52,588 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3771 transitions. Word has length 54 [2021-11-19 14:00:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:52,588 INFO L470 AbstractCegarLoop]: Abstraction has 2917 states and 3771 transitions. [2021-11-19 14:00:52,589 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) [2021-11-19 14:00:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3771 transitions. [2021-11-19 14:00:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 14:00:52,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:52,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:52,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:52,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:52,802 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -665468730, now seen corresponding path program 1 times [2021-11-19 14:00:52,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:52,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846993594] [2021-11-19 14:00:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:52,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:52,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:52,805 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:52,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:00:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:53,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:53,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:53,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:00:53,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:00:53,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:00:53,126 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 14:00:53,127 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 [2021-11-19 14:00:53,191 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 14:00:53,191 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 [2021-11-19 14:00:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:53,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:53,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:53,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846993594] [2021-11-19 14:00:53,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846993594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:53,428 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:53,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:00:53,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906363884] [2021-11-19 14:00:53,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:53,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:53,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:53,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:00:53,429 INFO L87 Difference]: Start difference. First operand 2917 states and 3771 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) [2021-11-19 14:00:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:56,352 INFO L93 Difference]: Finished difference Result 3022 states and 3882 transitions. [2021-11-19 14:00:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:00:56,353 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 [2021-11-19 14:00:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:56,355 INFO L225 Difference]: With dead ends: 3022 [2021-11-19 14:00:56,356 INFO L226 Difference]: Without dead ends: 3022 [2021-11-19 14:00:56,356 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 [2021-11-19 14:00:56,357 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 903 mSDsluCounter, 6545 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 8431 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:56,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 8431 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 14:00:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-11-19 14:00:56,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2883. [2021-11-19 14:00:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2039 states have (on average 1.8097106424718) internal successors, (3690), 2860 states have internal predecessors, (3690), 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) [2021-11-19 14:00:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3736 transitions. [2021-11-19 14:00:56,396 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3736 transitions. Word has length 57 [2021-11-19 14:00:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:56,397 INFO L470 AbstractCegarLoop]: Abstraction has 2883 states and 3736 transitions. [2021-11-19 14:00:56,397 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) [2021-11-19 14:00:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3736 transitions. [2021-11-19 14:00:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 14:00:56,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:56,398 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] [2021-11-19 14:00:56,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 14:00:56,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:56,616 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:56,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-19 14:00:56,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:56,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824639515] [2021-11-19 14:00:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:56,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:56,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:56,618 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:56,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:00:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:56,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:00:56,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:57,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:57,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:57,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824639515] [2021-11-19 14:00:57,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824639515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:57,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:57,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:00:57,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071104743] [2021-11-19 14:00:57,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:57,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:57,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:57,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:57,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:57,531 INFO L87 Difference]: Start difference. First operand 2883 states and 3736 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) [2021-11-19 14:00:57,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:57,692 INFO L93 Difference]: Finished difference Result 4147 states and 5185 transitions. [2021-11-19 14:00:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:57,695 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 [2021-11-19 14:00:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:57,701 INFO L225 Difference]: With dead ends: 4147 [2021-11-19 14:00:57,701 INFO L226 Difference]: Without dead ends: 4147 [2021-11-19 14:00:57,701 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 [2021-11-19 14:00:57,702 INFO L933 BasicCegarLoop]: 2356 mSDtfsCounter, 1075 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:57,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 4227 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:00:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2021-11-19 14:00:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3606. [2021-11-19 14:00:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 2758 states have (on average 1.777012327773749) internal successors, (4901), 3576 states have internal predecessors, (4901), 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) [2021-11-19 14:00:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 4961 transitions. [2021-11-19 14:00:57,755 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 4961 transitions. Word has length 59 [2021-11-19 14:00:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:57,755 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 4961 transitions. [2021-11-19 14:00:57,755 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) [2021-11-19 14:00:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 4961 transitions. [2021-11-19 14:00:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 14:00:57,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:57,757 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] [2021-11-19 14:00:57,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:57,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:57,970 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:00:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-19 14:00:57,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:57,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515610310] [2021-11-19 14:00:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:57,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:57,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:57,972 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:57,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:00:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:58,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:00:58,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:58,317 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 [2021-11-19 14:00:58,324 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 [2021-11-19 14:00:58,919 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:00:58,919 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 [2021-11-19 14:00:58,924 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:00:58,924 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 [2021-11-19 14:00:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:58,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:03,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:03,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515610310] [2021-11-19 14:01:03,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515610310] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:03,880 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:03,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:01:03,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334849097] [2021-11-19 14:01:03,881 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:03,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:01:03,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:01:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:01:03,882 INFO L87 Difference]: Start difference. First operand 3606 states and 4961 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) [2021-11-19 14:01:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:16,992 INFO L93 Difference]: Finished difference Result 7022 states and 9543 transitions. [2021-11-19 14:01:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:01:16,993 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 [2021-11-19 14:01:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:17,001 INFO L225 Difference]: With dead ends: 7022 [2021-11-19 14:01:17,001 INFO L226 Difference]: Without dead ends: 7022 [2021-11-19 14:01:17,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 14:01:17,008 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 2804 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 6991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3633 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:17,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 4511 Invalid, 6991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3283 Invalid, 0 Unknown, 3633 Unchecked, 12.9s Time] [2021-11-19 14:01:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2021-11-19 14:01:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 3733. [2021-11-19 14:01:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 2917 states have (on average 1.750771340418238) internal successors, (5107), 3700 states have internal predecessors, (5107), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:01:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5173 transitions. [2021-11-19 14:01:17,114 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5173 transitions. Word has length 62 [2021-11-19 14:01:17,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:17,114 INFO L470 AbstractCegarLoop]: Abstraction has 3733 states and 5173 transitions. [2021-11-19 14:01:17,114 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) [2021-11-19 14:01:17,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5173 transitions. [2021-11-19 14:01:17,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 14:01:17,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:17,115 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] [2021-11-19 14:01:17,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:17,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:17,316 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:01:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times [2021-11-19 14:01:17,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:17,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99017414] [2021-11-19 14:01:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:17,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:17,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:17,318 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:17,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:01:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:17,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:01:17,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:17,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:17,867 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 [2021-11-19 14:01:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:18,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:18,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99017414] [2021-11-19 14:01:18,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99017414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:18,184 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:18,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:01:18,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730051714] [2021-11-19 14:01:18,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:18,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:01:18,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:01:18,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:01:18,186 INFO L87 Difference]: Start difference. First operand 3733 states and 5173 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) [2021-11-19 14:01:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:21,718 INFO L93 Difference]: Finished difference Result 3731 states and 5169 transitions. [2021-11-19 14:01:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:01:21,719 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 [2021-11-19 14:01:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:21,724 INFO L225 Difference]: With dead ends: 3731 [2021-11-19 14:01:21,725 INFO L226 Difference]: Without dead ends: 3731 [2021-11-19 14:01:21,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:01:21,726 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 4975 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:21,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 1670 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 14:01:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-11-19 14:01:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3731. [2021-11-19 14:01:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 2917 states have (on average 1.7494000685635926) internal successors, (5103), 3698 states have internal predecessors, (5103), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:01:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5169 transitions. [2021-11-19 14:01:21,778 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5169 transitions. Word has length 64 [2021-11-19 14:01:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:21,778 INFO L470 AbstractCegarLoop]: Abstraction has 3731 states and 5169 transitions. [2021-11-19 14:01:21,778 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) [2021-11-19 14:01:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5169 transitions. [2021-11-19 14:01:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 14:01:21,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:21,780 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] [2021-11-19 14:01:21,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:21,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:21,997 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:01:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-19 14:01:21,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:21,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750379518] [2021-11-19 14:01:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:21,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:21,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:22,000 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:22,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:01:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:22,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:22,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:22,418 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 [2021-11-19 14:01:22,433 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 [2021-11-19 14:01:22,476 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 [2021-11-19 14:01:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:22,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:22,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:22,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750379518] [2021-11-19 14:01:22,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750379518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:22,626 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:22,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:01:22,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97711454] [2021-11-19 14:01:22,626 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:22,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:22,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:22,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:22,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:22,628 INFO L87 Difference]: Start difference. First operand 3731 states and 5169 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) [2021-11-19 14:01:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:28,334 INFO L93 Difference]: Finished difference Result 3730 states and 5167 transitions. [2021-11-19 14:01:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:01:28,334 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 [2021-11-19 14:01:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:28,339 INFO L225 Difference]: With dead ends: 3730 [2021-11-19 14:01:28,339 INFO L226 Difference]: Without dead ends: 3730 [2021-11-19 14:01:28,339 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 [2021-11-19 14:01:28,339 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 4 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:28,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5216 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-19 14:01:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2021-11-19 14:01:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3730. [2021-11-19 14:01:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2917 states have (on average 1.7487144326362702) internal successors, (5101), 3697 states have internal predecessors, (5101), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:01:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5167 transitions. [2021-11-19 14:01:28,393 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5167 transitions. Word has length 67 [2021-11-19 14:01:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:28,394 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5167 transitions. [2021-11-19 14:01:28,394 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) [2021-11-19 14:01:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5167 transitions. [2021-11-19 14:01:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 14:01:28,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:28,395 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] [2021-11-19 14:01:28,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-19 14:01:28,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:28,628 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:01:28,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-19 14:01:28,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:28,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565193493] [2021-11-19 14:01:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:28,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:28,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:28,631 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:28,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 14:01:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:28,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:28,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:29,074 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 [2021-11-19 14:01:29,098 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 [2021-11-19 14:01:29,109 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 [2021-11-19 14:01:29,180 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 [2021-11-19 14:01:29,184 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 [2021-11-19 14:01:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:29,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:29,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:29,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565193493] [2021-11-19 14:01:29,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565193493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:29,575 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:29,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:01:29,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780507413] [2021-11-19 14:01:29,575 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:29,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:29,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:29,577 INFO L87 Difference]: Start difference. First operand 3730 states and 5167 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) [2021-11-19 14:01:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:49,791 INFO L93 Difference]: Finished difference Result 3729 states and 5165 transitions. [2021-11-19 14:01:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:01:49,792 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 [2021-11-19 14:01:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:49,796 INFO L225 Difference]: With dead ends: 3729 [2021-11-19 14:01:49,797 INFO L226 Difference]: Without dead ends: 3729 [2021-11-19 14:01:49,797 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 [2021-11-19 14:01:49,797 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 2 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 5433 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8318 SdHoareTripleChecker+Invalid, 5434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:49,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 8318 Invalid, 5434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5433 Invalid, 0 Unknown, 0 Unchecked, 20.1s Time] [2021-11-19 14:01:49,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-11-19 14:01:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3729. [2021-11-19 14:01:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 2915 states have (on average 1.7492281303602057) internal successors, (5099), 3696 states have internal predecessors, (5099), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:01:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 5165 transitions. [2021-11-19 14:01:49,836 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 5165 transitions. Word has length 67 [2021-11-19 14:01:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:49,837 INFO L470 AbstractCegarLoop]: Abstraction has 3729 states and 5165 transitions. [2021-11-19 14:01:49,837 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) [2021-11-19 14:01:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 5165 transitions. [2021-11-19 14:01:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 14:01:49,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:49,838 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] [2021-11-19 14:01:49,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-19 14:01:50,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:50,053 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:01:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-19 14:01:50,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:50,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21495525] [2021-11-19 14:01:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:50,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:50,056 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:50,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:01:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:50,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:50,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:50,473 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 [2021-11-19 14:01:50,485 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 [2021-11-19 14:01:50,518 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 [2021-11-19 14:01:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:50,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:50,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:50,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21495525] [2021-11-19 14:01:50,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21495525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:50,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:50,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:01:50,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066273201] [2021-11-19 14:01:50,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:50,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:50,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:50,636 INFO L87 Difference]: Start difference. First operand 3729 states and 5165 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) [2021-11-19 14:01:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:56,445 INFO L93 Difference]: Finished difference Result 3728 states and 5161 transitions. [2021-11-19 14:01:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:01:56,446 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 [2021-11-19 14:01:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:56,450 INFO L225 Difference]: With dead ends: 3728 [2021-11-19 14:01:56,450 INFO L226 Difference]: Without dead ends: 3728 [2021-11-19 14:01:56,450 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 [2021-11-19 14:01:56,451 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 7 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5204 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:56,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5204 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-19 14:01:56,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-11-19 14:01:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3728. [2021-11-19 14:01:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 2915 states have (on average 1.7478559176672384) internal successors, (5095), 3695 states have internal predecessors, (5095), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:01:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 5161 transitions. [2021-11-19 14:01:56,485 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 5161 transitions. Word has length 67 [2021-11-19 14:01:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:56,485 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 5161 transitions. [2021-11-19 14:01:56,485 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) [2021-11-19 14:01:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 5161 transitions. [2021-11-19 14:01:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 14:01:56,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:56,486 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] [2021-11-19 14:01:56,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:56,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:56,695 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:01:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:56,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-19 14:01:56,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:56,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562869038] [2021-11-19 14:01:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:56,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:56,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:56,697 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:56,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 14:01:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:56,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:56,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:57,026 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 [2021-11-19 14:01:57,046 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 [2021-11-19 14:01:57,054 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 [2021-11-19 14:01:57,105 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 [2021-11-19 14:01:57,108 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 [2021-11-19 14:01:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:57,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:57,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:57,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562869038] [2021-11-19 14:01:57,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562869038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:57,452 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:57,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:01:57,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207727278] [2021-11-19 14:01:57,452 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:57,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:57,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:57,454 INFO L87 Difference]: Start difference. First operand 3728 states and 5161 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) [2021-11-19 14:02:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:17,827 INFO L93 Difference]: Finished difference Result 3727 states and 5157 transitions. [2021-11-19 14:02:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:02:17,828 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 [2021-11-19 14:02:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:17,831 INFO L225 Difference]: With dead ends: 3727 [2021-11-19 14:02:17,831 INFO L226 Difference]: Without dead ends: 3727 [2021-11-19 14:02:17,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:02:17,831 INFO L933 BasicCegarLoop]: 1959 mSDtfsCounter, 5 mSDsluCounter, 6348 mSDsCounter, 0 mSdLazyCounter, 5424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:17,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8307 Invalid, 5425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5424 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2021-11-19 14:02:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-11-19 14:02:17,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3727. [2021-11-19 14:02:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2911 states have (on average 1.7488835451734799) internal successors, (5091), 3694 states have internal predecessors, (5091), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 14:02:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5157 transitions. [2021-11-19 14:02:17,876 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5157 transitions. Word has length 67 [2021-11-19 14:02:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:17,876 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5157 transitions. [2021-11-19 14:02:17,876 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) [2021-11-19 14:02:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5157 transitions. [2021-11-19 14:02:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:02:17,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:17,878 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] [2021-11-19 14:02:17,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-19 14:02:18,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:18,092 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:02:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1448028751, now seen corresponding path program 1 times [2021-11-19 14:02:18,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:18,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121238170] [2021-11-19 14:02:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:18,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:18,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:18,094 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:18,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 14:02:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:18,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:02:18,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:18,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:18,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:18,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121238170] [2021-11-19 14:02:18,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121238170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:18,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:18,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:02:18,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751873881] [2021-11-19 14:02:18,745 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:18,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:02:18,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:02:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:02:18,746 INFO L87 Difference]: Start difference. First operand 3727 states and 5157 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) [2021-11-19 14:02:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:18,866 INFO L93 Difference]: Finished difference Result 3737 states and 5174 transitions. [2021-11-19 14:02:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:02:18,867 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 [2021-11-19 14:02:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:18,877 INFO L225 Difference]: With dead ends: 3737 [2021-11-19 14:02:18,878 INFO L226 Difference]: Without dead ends: 3737 [2021-11-19 14:02:18,878 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 [2021-11-19 14:02:18,879 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 11 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:18,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3919 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:02:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-19 14:02:18,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-19 14:02:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 2919 states have (on average 1.7482014388489209) internal successors, (5103), 3703 states have internal predecessors, (5103), 33 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (38), 30 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-19 14:02:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5174 transitions. [2021-11-19 14:02:18,973 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5174 transitions. Word has length 75 [2021-11-19 14:02:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:18,974 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 5174 transitions. [2021-11-19 14:02:18,974 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) [2021-11-19 14:02:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5174 transitions. [2021-11-19 14:02:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 14:02:18,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:18,975 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] [2021-11-19 14:02:18,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:19,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:19,189 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:02:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1921538705, now seen corresponding path program 1 times [2021-11-19 14:02:19,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:19,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845036610] [2021-11-19 14:02:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:19,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:19,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:19,191 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:19,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 14:02:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:19,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:02:19,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:19,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:19,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:19,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845036610] [2021-11-19 14:02:19,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845036610] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:02:19,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1106524658] [2021-11-19 14:02:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:19,913 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:02:19,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:02:19,915 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:02:19,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-19 14:02:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:20,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:02:20,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:20,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:20,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1106524658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:02:20,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202339617] [2021-11-19 14:02:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:20,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:02:20,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:02:20,635 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:02:20,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-19 14:02:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:20,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:02:20,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:21,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:21,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202339617] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:02:21,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:02:21,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 14:02:21,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468526143] [2021-11-19 14:02:21,327 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:02:21,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:02:21,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:02:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:02:21,329 INFO L87 Difference]: Start difference. First operand 3737 states and 5174 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) [2021-11-19 14:02:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:22,017 INFO L93 Difference]: Finished difference Result 3751 states and 5195 transitions. [2021-11-19 14:02:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:02:22,018 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 [2021-11-19 14:02:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:22,028 INFO L225 Difference]: With dead ends: 3751 [2021-11-19 14:02:22,028 INFO L226 Difference]: Without dead ends: 3745 [2021-11-19 14:02:22,029 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 [2021-11-19 14:02:22,030 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 43 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 7833 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:22,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 7833 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:02:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2021-11-19 14:02:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3743. [2021-11-19 14:02:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 2925 states have (on average 1.747008547008547) internal successors, (5110), 3709 states have internal predecessors, (5110), 33 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (38), 30 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-19 14:02:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5181 transitions. [2021-11-19 14:02:22,087 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5181 transitions. Word has length 77 [2021-11-19 14:02:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:22,087 INFO L470 AbstractCegarLoop]: Abstraction has 3743 states and 5181 transitions. [2021-11-19 14:02:22,087 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) [2021-11-19 14:02:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5181 transitions. [2021-11-19 14:02:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 14:02:22,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:22,089 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] [2021-11-19 14:02:22,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:22,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:22,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:22,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:02:22,708 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 14:02:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:22,709 INFO L85 PathProgramCache]: Analyzing trace with hash -962346065, now seen corresponding path program 2 times [2021-11-19 14:02:22,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:22,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073612486] [2021-11-19 14:02:22,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:02:22,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:22,710 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:22,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 14:02:23,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:02:23,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:02:23,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:02:23,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:23,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:23,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:23,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073612486] [2021-11-19 14:02:23,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073612486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:02:23,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [962284928] [2021-11-19 14:02:23,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:02:23,997 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:02:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:02:23,998 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:02:23,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 14:02:24,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:02:24,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:02:24,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:02:24,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:25,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:25,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [962284928] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:02:25,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968441994] [2021-11-19 14:02:25,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:02:25,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:02:25,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:02:25,261 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:02:25,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bc0628-cb09-40dc-96aa-b75a97459072/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-19 14:02:39,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:02:39,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:02:39,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:02:39,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:39,774 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 [2021-11-19 14:02:40,035 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:02:40,036 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 15 treesize of output 15 [2021-11-19 14:02:40,095 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 [2021-11-19 14:04:18,838 WARN L227 SmtUtils]: Spent 14.80s 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) [2021-11-19 14:04:18,838 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 14:04:18,839 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 [2021-11-19 14:04:19,537 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:04:19,538 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 [2021-11-19 14:04:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:04:19,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:21,427 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 14:04:21,428 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 61 treesize of output 60 [2021-11-19 14:09:55,299 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 14:09:55,299 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 112 treesize of output 111 [2021-11-19 14:09:58,693 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$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~loopctr499|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) is different from false [2021-11-19 14:10:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:10:20,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968441994] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:10:20,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:10:20,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-19 14:10:20,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436537553] [2021-11-19 14:10:20,921 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:10:20,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-19 14:10:20,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:10:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-19 14:10:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1535, Unknown=197, NotChecked=84, Total=1980 [2021-11-19 14:10:20,923 INFO L87 Difference]: Start difference. First operand 3743 states and 5181 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) [2021-11-19 14:10:26,344 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-19 14:12:13,241 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_118|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$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~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr499|)) is different from false