./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE --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 d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE --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 d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:29:24,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:29:24,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:29:24,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:29:24,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:29:24,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:29:24,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:29:24,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:29:24,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:29:24,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:29:24,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:29:24,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:29:24,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:29:24,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:29:24,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:29:24,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:29:24,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:29:24,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:29:24,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:29:24,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:29:24,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:29:24,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:29:24,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:29:24,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:29:24,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:29:24,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:29:24,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:29:24,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:29:24,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:29:24,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:29:24,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:29:24,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:29:24,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:29:24,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:29:24,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:29:24,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:29:24,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:29:24,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:29:24,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:29:24,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:29:24,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:29:24,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:29:24,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:29:24,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:29:24,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:29:24,116 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:29:24,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:29:24,116 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:29:24,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:29:24,117 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:29:24,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:29:24,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:29:24,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:29:24,118 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:29:24,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:29:24,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:29:24,118 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:29:24,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:29:24,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:29:24,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:29:24,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:29:24,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:29:24,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:29:24,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:29:24,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:29:24,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:29:24,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:29:24,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:29:24,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:29:24,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:29:24,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:29:24,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:29:24,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:29:24,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:29:24,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:29:24,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:29:24,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:29:24,124 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:29:24,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:29:24,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:29:24,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:29:24,125 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_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2021-10-24 10:29:24,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:29:24,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:29:24,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:29:24,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:29:24,401 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:29:24,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety/test-0102-2.i [2021-10-24 10:29:24,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/9d109eb92/1b00f9a9f2624e3aba5ea40818be3e5d/FLAG0294dc2d7 [2021-10-24 10:29:24,991 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:29:24,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/sv-benchmarks/c/memsafety/test-0102-2.i [2021-10-24 10:29:25,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/9d109eb92/1b00f9a9f2624e3aba5ea40818be3e5d/FLAG0294dc2d7 [2021-10-24 10:29:25,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/9d109eb92/1b00f9a9f2624e3aba5ea40818be3e5d [2021-10-24 10:29:25,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:29:25,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:29:25,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:29:25,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:29:25,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:29:25,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:25" (1/1) ... [2021-10-24 10:29:25,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23219b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:25, skipping insertion in model container [2021-10-24 10:29:25,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:25" (1/1) ... [2021-10-24 10:29:25,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:29:25,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:29:25,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:29:25,675 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) [2021-10-24 10:29:25,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a212d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:25, skipping insertion in model container [2021-10-24 10:29:25,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:29:25,676 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:29:25,678 INFO L168 Benchmark]: Toolchain (without parser) took 395.97 ms. Allocated memory is still 119.5 MB. Free memory was 78.4 MB in the beginning and 92.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:25,679 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 96.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:29:25,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.35 ms. Allocated memory is still 119.5 MB. Free memory was 78.2 MB in the beginning and 92.8 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:29:25,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 96.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.35 ms. Allocated memory is still 119.5 MB. Free memory was 78.2 MB in the beginning and 92.8 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:29:27,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:29:27,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:29:27,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:29:27,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:29:27,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:29:27,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:29:27,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:29:27,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:29:27,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:29:27,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:29:27,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:29:27,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:29:27,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:29:27,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:29:27,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:29:27,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:29:27,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:29:27,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:29:27,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:29:27,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:29:27,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:29:27,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:29:27,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:29:27,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:29:27,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:29:27,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:29:27,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:29:27,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:29:27,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:29:27,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:29:27,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:29:27,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:29:27,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:29:27,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:29:27,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:29:27,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:29:28,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:29:28,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:29:28,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:29:28,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:29:28,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:29:28,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:29:28,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:29:28,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:29:28,058 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:29:28,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:29:28,059 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:29:28,059 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:29:28,059 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:29:28,059 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:29:28,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:29:28,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:29:28,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:29:28,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:29:28,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:29:28,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:29:28,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:29:28,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:29:28,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:29:28,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:29:28,063 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:29:28,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:29:28,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:29:28,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:29:28,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:29:28,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:29:28,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:29:28,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:29:28,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:29:28,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:29:28,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:29:28,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:29:28,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:29:28,066 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:29:28,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:29:28,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:29:28,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:29:28,067 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_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2021-10-24 10:29:28,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:29:28,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:29:28,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:29:28,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:29:28,488 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:29:28,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety/test-0102-2.i [2021-10-24 10:29:28,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/8ea3fdd41/3a15cbb3a08b4b4ea820a87e6d9592bc/FLAGd1c4296be [2021-10-24 10:29:29,093 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:29:29,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/sv-benchmarks/c/memsafety/test-0102-2.i [2021-10-24 10:29:29,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/8ea3fdd41/3a15cbb3a08b4b4ea820a87e6d9592bc/FLAGd1c4296be [2021-10-24 10:29:29,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/data/8ea3fdd41/3a15cbb3a08b4b4ea820a87e6d9592bc [2021-10-24 10:29:29,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:29:29,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:29:29,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:29:29,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:29:29,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:29:29,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:29" (1/1) ... [2021-10-24 10:29:29,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed039b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:29, skipping insertion in model container [2021-10-24 10:29:29,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:29" (1/1) ... [2021-10-24 10:29:29,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:29:29,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:29:29,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:29:29,831 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:29:29,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:29:29,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:29:29,917 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:29:29,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:29:30,019 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:29:30,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30 WrapperNode [2021-10-24 10:29:30,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:29:30,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:29:30,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:29:30,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:29:30,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:29:30,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:29:30,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:29:30,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:29:30,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:29:30,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:29:30,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:29:30,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:29:30,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (1/1) ... [2021-10-24 10:29:30,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:29:30,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:29:30,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:29:30,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:29:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:29:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:29:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:29:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 10:29:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 10:29:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:29:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 10:29:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:29:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:29:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:29:31,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:29:31,110 INFO L299 CfgBuilder]: Removed 37 assume(true) statements. [2021-10-24 10:29:31,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:31 BoogieIcfgContainer [2021-10-24 10:29:31,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:29:31,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:29:31,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:29:31,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:29:31,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:29:29" (1/3) ... [2021-10-24 10:29:31,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b88f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:29:31, skipping insertion in model container [2021-10-24 10:29:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:30" (2/3) ... [2021-10-24 10:29:31,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b88f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:29:31, skipping insertion in model container [2021-10-24 10:29:31,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:31" (3/3) ... [2021-10-24 10:29:31,120 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0102-2.i [2021-10-24 10:29:31,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:29:31,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2021-10-24 10:29:31,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:29:31,174 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 [2021-10-24 10:29:31,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2021-10-24 10:29:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 63 states have (on average 2.111111111111111) internal successors, (133), 120 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:29:31,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:31,199 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:29:31,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:31,206 INFO L82 PathProgramCache]: Analyzing trace with hash 28828812, now seen corresponding path program 1 times [2021-10-24 10:29:31,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:31,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306293323] [2021-10-24 10:29:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:31,220 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:31,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:31,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:29:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:31,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:29:31,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:31,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:31,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:31,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306293323] [2021-10-24 10:29:31,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306293323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:31,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:31,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:29:31,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271754299] [2021-10-24 10:29:31,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:29:31,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:29:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:29:31,418 INFO L87 Difference]: Start difference. First operand has 121 states, 63 states have (on average 2.111111111111111) internal successors, (133), 120 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-24 10:29:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:31,444 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2021-10-24 10:29:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:29:31,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-24 10:29:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:31,455 INFO L225 Difference]: With dead ends: 121 [2021-10-24 10:29:31,455 INFO L226 Difference]: Without dead ends: 119 [2021-10-24 10:29:31,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:29:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-24 10:29:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-24 10:29:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 62 states have (on average 1.9838709677419355) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2021-10-24 10:29:31,532 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 5 [2021-10-24 10:29:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:31,533 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2021-10-24 10:29:31,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-24 10:29:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2021-10-24 10:29:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:29:31,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:31,535 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:29:31,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:31,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:31,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash 889540459, now seen corresponding path program 1 times [2021-10-24 10:29:31,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:31,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164492188] [2021-10-24 10:29:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:31,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:31,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:31,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:31,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:29:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:31,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:29:31,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:31,888 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 [2021-10-24 10:29:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:31,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:32,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:32,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164492188] [2021-10-24 10:29:32,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164492188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:32,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:32,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:29:32,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504563276] [2021-10-24 10:29:32,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:29:32,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:29:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:29:32,090 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:32,991 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2021-10-24 10:29:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:29:32,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:29:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:32,994 INFO L225 Difference]: With dead ends: 119 [2021-10-24 10:29:32,994 INFO L226 Difference]: Without dead ends: 119 [2021-10-24 10:29:32,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:29:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-24 10:29:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-10-24 10:29:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-10-24 10:29:33,004 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 6 [2021-10-24 10:29:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:33,004 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-10-24 10:29:33,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-10-24 10:29:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:29:33,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:33,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:29:33,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:33,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:33,227 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash 889540458, now seen corresponding path program 1 times [2021-10-24 10:29:33,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:33,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605514704] [2021-10-24 10:29:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:33,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:33,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:33,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:33,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:29:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:33,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:29:33,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:33,329 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 [2021-10-24 10:29:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:33,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:33,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:33,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605514704] [2021-10-24 10:29:33,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605514704] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:33,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:33,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:29:33,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362939653] [2021-10-24 10:29:33,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:29:33,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:33,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:29:33,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:29:33,405 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:33,687 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-10-24 10:29:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:29:33,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:29:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:33,689 INFO L225 Difference]: With dead ends: 143 [2021-10-24 10:29:33,689 INFO L226 Difference]: Without dead ends: 143 [2021-10-24 10:29:33,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:29:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-24 10:29:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2021-10-24 10:29:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 62 states have (on average 1.8870967741935485) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:33,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2021-10-24 10:29:33,698 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 6 [2021-10-24 10:29:33,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:33,699 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2021-10-24 10:29:33,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:33,699 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2021-10-24 10:29:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:29:33,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:33,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:29:33,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:33,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:33,924 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1986689261, now seen corresponding path program 1 times [2021-10-24 10:29:33,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:33,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164694104] [2021-10-24 10:29:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:33,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:33,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:33,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:29:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:34,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:29:34,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:34,037 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 [2021-10-24 10:29:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:34,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:34,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:34,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164694104] [2021-10-24 10:29:34,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164694104] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:34,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:34,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:29:34,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718000339] [2021-10-24 10:29:34,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:29:34,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:29:34,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:29:34,153 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:34,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:34,446 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2021-10-24 10:29:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:29:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 10 [2021-10-24 10:29:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:34,448 INFO L225 Difference]: With dead ends: 118 [2021-10-24 10:29:34,449 INFO L226 Difference]: Without dead ends: 118 [2021-10-24 10:29:34,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:29:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-24 10:29:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 111. [2021-10-24 10:29:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 62 states have (on average 1.8548387096774193) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-10-24 10:29:34,456 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 10 [2021-10-24 10:29:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:34,457 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-10-24 10:29:34,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-10-24 10:29:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:29:34,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:34,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:29:34,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:34,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:34,669 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1986689262, now seen corresponding path program 1 times [2021-10-24 10:29:34,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:34,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726802032] [2021-10-24 10:29:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:34,671 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:34,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:34,672 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:34,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:29:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:34,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:29:34,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:34,794 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 [2021-10-24 10:29:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:34,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:34,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:34,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726802032] [2021-10-24 10:29:34,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726802032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:34,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:34,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:29:34,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293496404] [2021-10-24 10:29:34,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:29:34,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:29:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:29:34,838 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:35,078 INFO L93 Difference]: Finished difference Result 142 states and 148 transitions. [2021-10-24 10:29:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:29:35,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-24 10:29:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:35,081 INFO L225 Difference]: With dead ends: 142 [2021-10-24 10:29:35,081 INFO L226 Difference]: Without dead ends: 142 [2021-10-24 10:29:35,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:29:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-24 10:29:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 109. [2021-10-24 10:29:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 62 states have (on average 1.8225806451612903) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2021-10-24 10:29:35,097 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 10 [2021-10-24 10:29:35,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:35,097 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2021-10-24 10:29:35,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2021-10-24 10:29:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:29:35,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:35,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:29:35,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:35,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:35,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:35,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2052066035, now seen corresponding path program 1 times [2021-10-24 10:29:35,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:35,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777511587] [2021-10-24 10:29:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:35,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:35,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:35,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:29:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:35,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:29:35,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:35,483 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 [2021-10-24 10:29:35,539 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-24 10:29:35,540 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 16 treesize of output 21 [2021-10-24 10:29:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:35,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:35,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:35,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777511587] [2021-10-24 10:29:35,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777511587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:35,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:35,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-24 10:29:35,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444769752] [2021-10-24 10:29:35,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:29:35,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:29:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:29:35,725 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:36,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:36,178 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-10-24 10:29:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:29:36,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 10:29:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:36,180 INFO L225 Difference]: With dead ends: 143 [2021-10-24 10:29:36,180 INFO L226 Difference]: Without dead ends: 143 [2021-10-24 10:29:36,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-24 10:29:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-24 10:29:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2021-10-24 10:29:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2021-10-24 10:29:36,187 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 12 [2021-10-24 10:29:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:36,187 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2021-10-24 10:29:36,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2021-10-24 10:29:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:29:36,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:36,188 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:29:36,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:36,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:36,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2052066036, now seen corresponding path program 1 times [2021-10-24 10:29:36,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:36,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347957690] [2021-10-24 10:29:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:36,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:36,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:36,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:29:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:36,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-24 10:29:36,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:36,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:29:36,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:29:36,703 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 10:29:36,704 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 29 treesize of output 31 [2021-10-24 10:29:36,715 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 10:29:36,716 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 28 treesize of output 24 [2021-10-24 10:29:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:36,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:37,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:37,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347957690] [2021-10-24 10:29:37,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347957690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:37,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:37,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 10:29:37,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722937338] [2021-10-24 10:29:37,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:29:37,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:29:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:29:37,614 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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) [2021-10-24 10:29:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:55,847 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-10-24 10:29:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 10:29:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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 12 [2021-10-24 10:29:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:55,850 INFO L225 Difference]: With dead ends: 137 [2021-10-24 10:29:55,850 INFO L226 Difference]: Without dead ends: 137 [2021-10-24 10:29:55,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3591.3ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-24 10:29:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-24 10:29:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 105. [2021-10-24 10:29:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2021-10-24 10:29:55,856 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 12 [2021-10-24 10:29:55,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:55,857 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2021-10-24 10:29:55,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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) [2021-10-24 10:29:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2021-10-24 10:29:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 10:29:55,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:55,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:29:55,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:56,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:56,071 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:56,072 INFO L82 PathProgramCache]: Analyzing trace with hash 645470996, now seen corresponding path program 1 times [2021-10-24 10:29:56,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:56,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806196279] [2021-10-24 10:29:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:56,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:56,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:56,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:56,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:29:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:29:56,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:56,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:56,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:56,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806196279] [2021-10-24 10:29:56,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806196279] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:56,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:56,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:29:56,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062442438] [2021-10-24 10:29:56,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:29:56,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:56,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:29:56,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:29:56,321 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:56,736 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2021-10-24 10:29:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:29:56,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-24 10:29:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:56,738 INFO L225 Difference]: With dead ends: 140 [2021-10-24 10:29:56,738 INFO L226 Difference]: Without dead ends: 140 [2021-10-24 10:29:56,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:29:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-24 10:29:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 102. [2021-10-24 10:29:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2021-10-24 10:29:56,743 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 14 [2021-10-24 10:29:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:56,744 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2021-10-24 10:29:56,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2021-10-24 10:29:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 10:29:56,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:56,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:29:56,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:29:56,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:29:56,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:29:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:29:56,961 INFO L82 PathProgramCache]: Analyzing trace with hash 645470997, now seen corresponding path program 1 times [2021-10-24 10:29:56,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:29:56,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709217064] [2021-10-24 10:29:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:29:56,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:29:56,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:29:56,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:29:56,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:29:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:29:57,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 10:29:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:29:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:57,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:29:57,484 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 [2021-10-24 10:29:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:29:57,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:29:57,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709217064] [2021-10-24 10:29:57,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709217064] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:29:57,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:29:57,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-24 10:29:57,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089548641] [2021-10-24 10:29:57,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-24 10:29:57,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:29:57,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-24 10:29:57,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:29:57,733 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:29:59,985 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2021-10-24 10:29:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-24 10:29:59,988 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 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 14 [2021-10-24 10:29:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:29:59,989 INFO L225 Difference]: With dead ends: 116 [2021-10-24 10:29:59,989 INFO L226 Difference]: Without dead ends: 116 [2021-10-24 10:29:59,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1270.9ms TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-10-24 10:29:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-24 10:29:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2021-10-24 10:29:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2021-10-24 10:29:59,994 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 14 [2021-10-24 10:29:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:29:59,994 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2021-10-24 10:29:59,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:29:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2021-10-24 10:29:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:29:59,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:29:59,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:30:00,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:30:00,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:30:00,196 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:30:00,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:30:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1465235593, now seen corresponding path program 1 times [2021-10-24 10:30:00,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:30:00,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071103958] [2021-10-24 10:30:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:30:00,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:30:00,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:30:00,198 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:30:00,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:30:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:30:00,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:30:00,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:30:00,376 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 [2021-10-24 10:30:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:00,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:30:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:00,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:30:00,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071103958] [2021-10-24 10:30:00,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071103958] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:30:00,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:30:00,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:30:00,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098334210] [2021-10-24 10:30:00,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:30:00,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:30:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:30:00,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:30:00,484 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:30:00,948 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-10-24 10:30:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:30:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 10:30:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:30:00,949 INFO L225 Difference]: With dead ends: 136 [2021-10-24 10:30:00,950 INFO L226 Difference]: Without dead ends: 136 [2021-10-24 10:30:00,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:30:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-24 10:30:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 94. [2021-10-24 10:30:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.5806451612903225) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-10-24 10:30:00,954 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 15 [2021-10-24 10:30:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:30:00,954 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-24 10:30:00,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-10-24 10:30:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 10:30:00,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:30:00,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:30:00,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:30:01,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:30:01,160 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:30:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:30:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1465235592, now seen corresponding path program 1 times [2021-10-24 10:30:01,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:30:01,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435186282] [2021-10-24 10:30:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:30:01,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:30:01,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:30:01,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:30:01,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 10:30:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:30:01,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:30:01,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:30:01,347 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 [2021-10-24 10:30:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:01,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:30:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:01,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:30:01,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435186282] [2021-10-24 10:30:01,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435186282] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:30:01,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:30:01,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 10:30:01,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16294919] [2021-10-24 10:30:01,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:30:01,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:30:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:30:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:30:01,776 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:30:02,735 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2021-10-24 10:30:02,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:30:02,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-24 10:30:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:30:02,738 INFO L225 Difference]: With dead ends: 102 [2021-10-24 10:30:02,738 INFO L226 Difference]: Without dead ends: 102 [2021-10-24 10:30:02,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 293.3ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-24 10:30:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-24 10:30:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2021-10-24 10:30:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2021-10-24 10:30:02,742 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 15 [2021-10-24 10:30:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:30:02,743 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2021-10-24 10:30:02,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2021-10-24 10:30:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:30:02,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:30:02,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:30:02,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 10:30:02,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:30:02,944 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:30:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:30:02,945 INFO L82 PathProgramCache]: Analyzing trace with hash 657868666, now seen corresponding path program 1 times [2021-10-24 10:30:02,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:30:02,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065552595] [2021-10-24 10:30:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:30:02,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:30:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:30:02,947 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:30:02,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 10:30:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:30:03,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-24 10:30:03,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:30:03,248 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 [2021-10-24 10:30:03,308 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 [2021-10-24 10:30:03,384 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-24 10:30:03,385 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:30:03,493 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 10:30:03,493 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 16 treesize of output 16 [2021-10-24 10:30:03,688 INFO L354 Elim1Store]: treesize reduction 562, result has 2.9 percent of original size [2021-10-24 10:30:03,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 27 [2021-10-24 10:30:03,802 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-24 10:30:03,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 10 [2021-10-24 10:30:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:03,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:30:03,970 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-10-24 10:30:03,971 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 24 treesize of output 23 [2021-10-24 10:30:04,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:30:04,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-24 10:30:06,139 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_insert_sub_~sub~0.base) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_ULTIMATE.start_insert_sub_~head.base) (bvadd (_ bv4 32) c_ULTIMATE.start_insert_sub_~head.offset)) c_ULTIMATE.start_insert_sub_~head.base)) is different from false [2021-10-24 10:30:08,222 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_24 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_24 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_24) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_24)))))) is different from false [2021-10-24 10:30:10,293 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_24 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_24 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_24) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_24)))))) is different from false [2021-10-24 10:30:13,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:30:13,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065552595] [2021-10-24 10:30:13,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:30:13,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1245978359] [2021-10-24 10:30:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:30:13,326 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:30:13,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:30:13,337 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:30:13,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-24 10:30:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:30:13,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-24 10:30:13,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:30:13,736 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 [2021-10-24 10:30:13,867 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 [2021-10-24 10:30:13,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:30:13,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:30:14,067 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 10:30:14,067 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 20 treesize of output 20 [2021-10-24 10:30:14,298 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-24 10:30:14,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 25 [2021-10-24 10:30:14,456 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:30:14,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-10-24 10:30:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:14,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:30:14,546 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-10-24 10:30:14,547 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 27 treesize of output 26 [2021-10-24 10:30:14,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:30:14,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-24 10:30:16,613 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= c_ULTIMATE.start_insert_sub_~head.base (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_insert_sub_~sub~0.base) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_5) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_6) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_7) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_8)) c_ULTIMATE.start_insert_sub_~head.base) (bvadd (_ bv4 32) c_ULTIMATE.start_insert_sub_~head.offset)))) is different from false [2021-10-24 10:30:18,670 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_5) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_6) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_7) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_8)) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))))) is different from false [2021-10-24 10:30:20,731 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_5) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_6) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_7) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_8))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base))) is different from false [2021-10-24 10:30:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:20,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1245978359] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:30:20,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:30:20,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 15 [2021-10-24 10:30:20,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251920774] [2021-10-24 10:30:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-24 10:30:20,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:30:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-24 10:30:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=361, Unknown=6, NotChecked=258, Total=702 [2021-10-24 10:30:20,997 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:23,169 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| c_ULTIMATE.start_insert_top_~top~0.base)))) (= (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (= c_ULTIMATE.start_insert_top_~top~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_create_sub_list_~sub.base))))) (= c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv8 32)) (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_5) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_6) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_7) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_8))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base)))) is different from false [2021-10-24 10:30:46,855 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| c_ULTIMATE.start_insert_top_~top~0.base)))) (= (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (= c_ULTIMATE.start_insert_top_~top~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_create_sub_list_~sub.base))))) (= c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv8 32)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_ULTIMATE.start___list_add_~prev.base)) (_ bv1 1))) (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_5) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_6) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_7) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_8))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base)))) is different from false [2021-10-24 10:30:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:30:47,110 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2021-10-24 10:30:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-24 10:30:47,111 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 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 17 [2021-10-24 10:30:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:30:47,112 INFO L225 Difference]: With dead ends: 134 [2021-10-24 10:30:47,112 INFO L226 Difference]: Without dead ends: 134 [2021-10-24 10:30:47,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 37388.0ms TimeCoverageRelationStatistics Valid=184, Invalid=770, Unknown=8, NotChecked=520, Total=1482 [2021-10-24 10:30:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-24 10:30:47,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 100. [2021-10-24 10:30:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.4583333333333333) internal successors, (105), 99 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2021-10-24 10:30:47,116 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 17 [2021-10-24 10:30:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:30:47,117 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2021-10-24 10:30:47,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:30:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2021-10-24 10:30:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:30:47,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:30:47,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:30:47,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-24 10:30:47,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 10:30:47,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:30:47,525 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-10-24 10:30:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:30:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash 657868667, now seen corresponding path program 1 times [2021-10-24 10:30:47,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:30:47,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2252278] [2021-10-24 10:30:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:30:47,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:30:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:30:47,534 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:30:47,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-24 10:30:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:30:47,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-24 10:30:47,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:30:47,882 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 [2021-10-24 10:30:47,894 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 [2021-10-24 10:30:47,987 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 [2021-10-24 10:30:48,005 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 [2021-10-24 10:30:48,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:30:48,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:30:48,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:30:48,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:30:48,238 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 10:30:48,238 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 20 treesize of output 20 [2021-10-24 10:30:48,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-24 10:30:48,612 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-24 10:30:48,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-10-24 10:30:48,732 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-24 10:30:48,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-10-24 10:30:48,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-24 10:30:48,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-24 10:30:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:30:49,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:30:49,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:30:49,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-10-24 10:30:49,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:30:49,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-24 10:30:52,177 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) c_ULTIMATE.start_insert_sub_~head.offset))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_insert_sub_~sub~0.base) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse0 v_DerPreprocessor_14) .cse1 v_DerPreprocessor_15) .cse2 v_DerPreprocessor_16)) c_ULTIMATE.start_insert_sub_~head.base) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_insert_sub_~sub~0.base) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) c_ULTIMATE.start_insert_sub_~head.base) .cse3))))) (forall ((ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_insert_sub_~sub~0.base) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_16)) c_ULTIMATE.start_insert_sub_~head.base) (bvadd (_ bv4 32) c_ULTIMATE.start_insert_sub_~head.offset)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) is different from false [2021-10-24 10:30:54,446 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_26 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_26)))) (and (forall ((ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_16)) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse4 (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse1 v_DerPreprocessor_14) .cse2 v_DerPreprocessor_15) .cse3 v_DerPreprocessor_16)) c_ULTIMATE.start_create_sub_list_~sub.base) .cse4) (_ bv4 32)) (select (store |c_#length| v_ULTIMATE.start_insert_sub_~sub~0.base_26 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) c_ULTIMATE.start_create_sub_list_~sub.base) .cse4)))))))) is different from false [2021-10-24 10:30:56,840 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_26 (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse1 v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select .cse1 v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_16))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse3 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse4 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse5 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse6 (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse2 v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select .cse2 v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse3 v_DerPreprocessor_14) .cse4 v_DerPreprocessor_15) .cse5 v_DerPreprocessor_16))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse6)) (select (store |c_#length| v_ULTIMATE.start_insert_sub_~sub~0.base_26 (_ bv12 32)) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse3 v_DerPreprocessor_10) .cse4 v_DerPreprocessor_11) .cse5 v_DerPreprocessor_12))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse6)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_26)))))) is different from false [2021-10-24 10:32:23,744 WARN L207 SmtUtils]: Spent 1.44 m on a formula simplification that was a NOOP. DAG size: 1805 [2021-10-24 10:32:24,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:32:24,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2252278] [2021-10-24 10:32:24,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:32:24,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [939801808] [2021-10-24 10:32:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:24,425 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:32:24,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:32:24,427 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:32:24,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-24 10:32:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:24,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-24 10:32:24,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:24,992 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 [2021-10-24 10:32:25,001 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 [2021-10-24 10:32:25,081 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 [2021-10-24 10:32:25,091 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 [2021-10-24 10:32:25,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:32:25,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:32:25,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:32:25,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:32:25,235 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-24 10:32:25,236 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 12 treesize of output 18 [2021-10-24 10:32:25,286 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 10:32:25,286 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 21 treesize of output 21 [2021-10-24 10:32:25,603 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-24 10:32:25,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-10-24 10:32:25,718 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-24 10:32:25,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-10-24 10:32:25,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-24 10:32:25,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-24 10:32:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:25,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:26,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:32:26,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-10-24 10:32:26,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:32:26,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-24 10:32:36,844 WARN L207 SmtUtils]: Spent 6.96 s on a formula simplification that was a NOOP. DAG size: 46 [2021-10-24 10:32:39,088 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_27))))))) (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse3 (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) .cse0 v_DerPreprocessor_22) .cse1 v_DerPreprocessor_23) .cse2 v_DerPreprocessor_24)) c_ULTIMATE.start_create_sub_list_~sub.base) .cse3)) (select (store |c_#length| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse0 v_DerPreprocessor_18) .cse1 v_DerPreprocessor_19) .cse2 v_DerPreprocessor_20)) c_ULTIMATE.start_create_sub_list_~sub.base) .cse3))))) (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_22) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_24)) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))))) is different from false [2021-10-24 10:32:41,378 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse1 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse4 (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) .cse1 v_DerPreprocessor_22) .cse2 v_DerPreprocessor_23) .cse3 v_DerPreprocessor_24))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse5 v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select .cse5 v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_22) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_24))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_27))))))))) is different from false [2021-10-24 10:32:43,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:32:43,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670280838] [2021-10-24 10:32:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:32:43,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:32:43,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:32:43,907 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:32:43,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-24 10:32:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:32:44,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-24 10:32:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:32:44,181 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 [2021-10-24 10:32:44,312 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 [2021-10-24 10:32:44,321 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 [2021-10-24 10:32:44,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:32:44,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:32:44,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:32:44,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-24 10:32:44,452 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-24 10:32:44,452 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 12 treesize of output 18 [2021-10-24 10:32:44,481 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 10:32:44,481 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 17 treesize of output 17 [2021-10-24 10:32:44,761 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-24 10:32:44,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-10-24 10:32:44,956 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-24 10:32:44,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-10-24 10:32:45,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-24 10:32:45,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-24 10:32:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:32:45,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:32:45,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:32:45,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-10-24 10:32:45,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:32:45,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-24 10:33:05,581 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 46 [2021-10-24 10:33:27,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:33:28,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:33:56,173 WARN L207 SmtUtils]: Spent 28.09 s on a formula simplification that was a NOOP. DAG size: 1332 [2021-10-24 10:33:56,427 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-24 10:33:56,429 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 9330607 treesize of output 9330606 [2021-10-24 10:34:24,524 WARN L207 SmtUtils]: Spent 28.09 s on a formula simplification that was a NOOP. DAG size: 1331 [2021-10-24 10:34:51,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:34:51,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:34:51,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 10:34:51,542 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 10:34:51,542 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 10:34:51,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-24 10:34:51,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:34:51,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:34:51,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:34:51,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:34:51,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:34:51,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:34:51,550 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 10:34:51,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 10:34:51,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 10:34:51,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 10:34:51,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-24 10:34:51,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-24 10:34:51,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-24 10:34:51,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-24 10:34:51,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-24 10:34:51,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-24 10:34:51,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-24 10:34:51,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-24 10:34:51,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-24 10:34:51,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-24 10:34:51,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-24 10:34:51,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-24 10:34:51,553 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-24 10:34:51,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-24 10:34:51,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-24 10:34:51,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-24 10:34:51,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-24 10:34:51,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-24 10:34:51,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-24 10:34:51,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-24 10:34:51,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-24 10:34:51,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-24 10:34:51,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-24 10:34:51,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-24 10:34:51,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-24 10:34:51,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-24 10:34:51,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-24 10:34:51,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-24 10:34:51,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-24 10:34:51,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-24 10:34:51,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-24 10:34:51,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-24 10:34:51,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-24 10:34:51,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-24 10:34:51,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-24 10:34:51,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-24 10:34:51,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-24 10:34:51,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-24 10:34:51,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-24 10:34:51,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:34:51,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:34:51,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:34:51,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:34:51,559 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:34:51,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:34:51,560 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:34:51,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:51,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:52,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-24 10:34:52,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:34:52,183 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:34:52,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:34:52 BoogieIcfgContainer [2021-10-24 10:34:52,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:34:52,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:34:52,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:34:52,206 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:34:52,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:31" (3/4) ... [2021-10-24 10:34:52,213 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:34:52,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:34:52,215 INFO L168 Benchmark]: Toolchain (without parser) took 322814.89 ms. Allocated memory was 81.8 MB in the beginning and 434.1 MB in the end (delta: 352.3 MB). Free memory was 45.0 MB in the beginning and 206.3 MB in the end (delta: -161.3 MB). Peak memory consumption was 192.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:52,215 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:52,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.17 ms. Allocated memory is still 81.8 MB. Free memory was 44.8 MB in the beginning and 53.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:52,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.79 ms. Allocated memory is still 81.8 MB. Free memory was 53.4 MB in the beginning and 50.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:52,217 INFO L168 Benchmark]: Boogie Preprocessor took 86.87 ms. Allocated memory is still 81.8 MB. Free memory was 50.9 MB in the beginning and 48.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:52,217 INFO L168 Benchmark]: RCFGBuilder took 929.49 ms. Allocated memory is still 81.8 MB. Free memory was 48.7 MB in the beginning and 50.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:52,218 INFO L168 Benchmark]: TraceAbstraction took 321091.11 ms. Allocated memory was 81.8 MB in the beginning and 434.1 MB in the end (delta: 352.3 MB). Free memory was 50.5 MB in the beginning and 206.3 MB in the end (delta: -155.7 MB). Peak memory consumption was 258.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:52,218 INFO L168 Benchmark]: Witness Printer took 7.92 ms. Allocated memory is still 434.1 MB. Free memory is still 206.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:52,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 618.17 ms. Allocated memory is still 81.8 MB. Free memory was 44.8 MB in the beginning and 53.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.79 ms. Allocated memory is still 81.8 MB. Free memory was 53.4 MB in the beginning and 50.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.87 ms. Allocated memory is still 81.8 MB. Free memory was 50.9 MB in the beginning and 48.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 929.49 ms. Allocated memory is still 81.8 MB. Free memory was 48.7 MB in the beginning and 50.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 321091.11 ms. Allocated memory was 81.8 MB in the beginning and 434.1 MB in the end (delta: 352.3 MB). Free memory was 50.5 MB in the beginning and 206.3 MB in the end (delta: -155.7 MB). Peak memory consumption was 258.9 MB. Max. memory is 16.1 GB. * Witness Printer took 7.92 ms. Allocated memory is still 434.1 MB. Free memory is still 206.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L601] struct list_head top = { &(top), &(top) }; [L586] struct top_list *top = malloc(sizeof(*top)); [L587] COND FALSE !(!top) [L578] sub->prev = sub [L579] sub->next = sub [L570] struct sub_list *sub = malloc(sizeof(*sub)); [L571] COND FALSE !(!sub) [L573] sub->number = 0 [L538] head->prev [L531] next->prev = new [L532] new->next = next [L533] new->prev = prev [L534] prev->next = new - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 121 locations, 57 error locations. Started 1 CEGAR loops. OverallTime: 321013.9ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 18.0ms, AutomataDifference: 50704.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 788 SDtfs, 2786 SDslu, 1340 SDs, 0 SdLazy, 2060 SolverSat, 195 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 20419.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 200 SyntacticMatches, 7 SemanticMatches, 117 ConstructedPredicates, 8 IntricatePredicates, 2 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 42925.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=0, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 112.8ms AutomataMinimizationTime, 12 MinimizatonAttempts, 283 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 103.9ms SsaConstructionTime, 626.8ms SatisfiabilityAnalysisTime, 10576.8ms InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 248 ConstructedInterpolants, 17 QuantifiedInterpolants, 1750 SizeOfPredicates, 76 NumberOfNonLiveVariables, 1033 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:34:52,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4bc86-5e07-4980-9f1e-6cf68629f559/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...