./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:33:40,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:33:40,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:33:40,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:33:40,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:33:40,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:33:40,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:33:40,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:33:40,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:33:40,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:33:40,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:33:40,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:33:40,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:33:40,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:33:40,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:33:40,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:33:40,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:33:40,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:33:40,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:33:40,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:33:40,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:33:40,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:33:40,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:33:40,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:33:40,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:33:40,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:33:40,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:33:40,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:33:40,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:33:40,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:33:40,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:33:40,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:33:40,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:33:40,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:33:40,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:33:40,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:33:40,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:33:40,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:33:40,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:33:40,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:33:40,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:33:40,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:33:40,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:33:40,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:33:40,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:33:40,999 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:33:40,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:33:41,000 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:33:41,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:33:41,000 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:33:41,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:33:41,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:33:41,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:33:41,001 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:33:41,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:33:41,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:33:41,002 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:33:41,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:33:41,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:33:41,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:33:41,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:33:41,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:33:41,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:33:41,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:33:41,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:33:41,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:33:41,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:33:41,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:33:41,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:33:41,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:33:41,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:33:41,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:33:41,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:33:41,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:33:41,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:33:41,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:33:41,006 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:33:41,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:33:41,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:33:41,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:33:41,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:33:41,007 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_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2021-11-07 01:33:41,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:33:41,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:33:41,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:33:41,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:33:41,291 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:33:41,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-07 01:33:41,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/00db535ef/12358bff140f40818c318d5d635d31d3/FLAG026a4a8f8 [2021-11-07 01:33:41,935 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:33:41,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-07 01:33:41,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/00db535ef/12358bff140f40818c318d5d635d31d3/FLAG026a4a8f8 [2021-11-07 01:33:42,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/00db535ef/12358bff140f40818c318d5d635d31d3 [2021-11-07 01:33:42,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:33:42,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:33:42,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:42,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:33:42,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:33:42,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:42" (1/1) ... [2021-11-07 01:33:42,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f67346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:42, skipping insertion in model container [2021-11-07 01:33:42,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:42" (1/1) ... [2021-11-07 01:33:42,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:33:42,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:33:42,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-07 01:33:42,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:42,819 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:33:42,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@685fa252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:42, skipping insertion in model container [2021-11-07 01:33:42,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:42,832 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:33:42,834 INFO L168 Benchmark]: Toolchain (without parser) took 644.77 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 55.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:33:42,834 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 96.5 MB. Free memory is still 77.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:33:42,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.27 ms. Allocated memory is still 96.5 MB. Free memory was 57.5 MB in the beginning and 55.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:33:42,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 96.5 MB. Free memory is still 77.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 642.27 ms. Allocated memory is still 96.5 MB. Free memory was 57.5 MB in the beginning and 55.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:33:45,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:33:45,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:33:45,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:33:45,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:33:45,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:33:45,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:33:45,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:33:45,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:33:45,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:33:45,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:33:45,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:33:45,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:33:45,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:33:45,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:33:45,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:33:45,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:33:45,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:33:45,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:33:45,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:33:45,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:33:45,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:33:45,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:33:45,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:33:45,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:33:45,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:33:45,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:33:45,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:33:45,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:33:45,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:33:45,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:33:45,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:33:45,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:33:45,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:33:45,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:33:45,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:33:45,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:33:45,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:33:45,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:33:45,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:33:45,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:33:45,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:33:45,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:33:45,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:33:45,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:33:45,286 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:33:45,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:33:45,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:33:45,286 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:33:45,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:33:45,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:33:45,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:33:45,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:33:45,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:33:45,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:33:45,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:33:45,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:33:45,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:33:45,289 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:33:45,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:33:45,290 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:33:45,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:33:45,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:33:45,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:33:45,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:33:45,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:33:45,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:33:45,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:33:45,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:33:45,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:33:45,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:33:45,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:33:45,292 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:33:45,293 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:33:45,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:33:45,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:33:45,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:33:45,293 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_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2021-11-07 01:33:45,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:33:45,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:33:45,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:33:45,689 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:33:45,690 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:33:45,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-07 01:33:45,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/cf2ab4ffe/5f78ce658a07445e8e61bddd0efc2ee3/FLAG033cecb41 [2021-11-07 01:33:46,457 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:33:46,458 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-07 01:33:46,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/cf2ab4ffe/5f78ce658a07445e8e61bddd0efc2ee3/FLAG033cecb41 [2021-11-07 01:33:46,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/data/cf2ab4ffe/5f78ce658a07445e8e61bddd0efc2ee3 [2021-11-07 01:33:46,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:33:46,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:33:46,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:46,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:33:46,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:33:46,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:46" (1/1) ... [2021-11-07 01:33:46,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcb72e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:46, skipping insertion in model container [2021-11-07 01:33:46,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:46" (1/1) ... [2021-11-07 01:33:46,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:33:46,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:33:47,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-07 01:33:47,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:47,474 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:33:47,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:33:47,526 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-07 01:33:47,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:47,658 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:33:47,685 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-07 01:33:47,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:33:47,821 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:33:47,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47 WrapperNode [2021-11-07 01:33:47,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:33:47,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:33:47,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:33:47,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:33:47,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:47,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:33:48,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:33:48,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:33:48,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:33:48,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:33:48,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:33:48,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:33:48,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:33:48,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (1/1) ... [2021-11-07 01:33:48,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:33:48,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:33:48,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:33:48,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:33:48,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:33:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:33:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:33:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:33:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:33:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:33:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:33:48,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:33:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:33:48,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:33:48,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:33:59,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:33:59,098 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-07 01:33:59,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:59 BoogieIcfgContainer [2021-11-07 01:33:59,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:33:59,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:33:59,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:33:59,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:33:59,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:33:46" (1/3) ... [2021-11-07 01:33:59,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fedf82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:59, skipping insertion in model container [2021-11-07 01:33:59,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:47" (2/3) ... [2021-11-07 01:33:59,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fedf82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:59, skipping insertion in model container [2021-11-07 01:33:59,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:59" (3/3) ... [2021-11-07 01:33:59,110 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-3.i [2021-11-07 01:33:59,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:33:59,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:33:59,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:33:59,175 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:33:59,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:33:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:33:59,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:59,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:33:59,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:33:59,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-07 01:33:59,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:59,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630032921] [2021-11-07 01:33:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:59,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:59,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:59,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:33:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:33:59,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:33:59,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:33:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:59,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:33:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:33:59,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:33:59,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630032921] [2021-11-07 01:33:59,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630032921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:33:59,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:33:59,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:33:59,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795734015] [2021-11-07 01:33:59,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:33:59,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:33:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:33:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:33:59,624 INFO L87 Difference]: Start difference. First operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:33:59,669 INFO L93 Difference]: Finished difference Result 540 states and 896 transitions. [2021-11-07 01:33:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:33:59,670 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:33:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:33:59,682 INFO L225 Difference]: With dead ends: 540 [2021-11-07 01:33:59,683 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 01:33:59,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:33:59,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 01:33:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 01:33:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-07 01:33:59,736 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-07 01:33:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:33:59,737 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-07 01:33:59,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:33:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-07 01:33:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:33:59,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:33:59,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:33:59,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:33:59,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:33:59,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:33:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:33:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-07 01:33:59,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:33:59,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248423124] [2021-11-07 01:33:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:33:59,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:33:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:33:59,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:33:59,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:34:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:00,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:34:00,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:00,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:00,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:00,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248423124] [2021-11-07 01:34:00,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248423124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:00,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:00,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:34:00,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553969275] [2021-11-07 01:34:00,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:00,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:00,263 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-11-07 01:34:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:00,588 INFO L93 Difference]: Finished difference Result 433 states and 564 transitions. [2021-11-07 01:34:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 8 [2021-11-07 01:34:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:00,593 INFO L225 Difference]: With dead ends: 433 [2021-11-07 01:34:00,593 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 01:34:00,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 01:34:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 01:34:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 378 states have (on average 1.3412698412698412) internal successors, (507), 387 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 507 transitions. [2021-11-07 01:34:00,634 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 507 transitions. Word has length 8 [2021-11-07 01:34:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:00,635 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 507 transitions. [2021-11-07 01:34:00,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-11-07 01:34:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 507 transitions. [2021-11-07 01:34:00,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:34:00,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:00,647 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:00,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:00,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:00,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1731820508, now seen corresponding path program 1 times [2021-11-07 01:34:00,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:00,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283247389] [2021-11-07 01:34:00,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:00,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:00,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:00,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:00,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:34:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:01,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:34:01,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:34:02,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:34:02,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:02,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283247389] [2021-11-07 01:34:02,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283247389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:02,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:02,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:34:02,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78896065] [2021-11-07 01:34:02,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:34:02,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:34:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:34:02,841 INFO L87 Difference]: Start difference. First operand 388 states and 507 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:02,978 INFO L93 Difference]: Finished difference Result 776 states and 1020 transitions. [2021-11-07 01:34:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:02,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 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 204 [2021-11-07 01:34:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:02,981 INFO L225 Difference]: With dead ends: 776 [2021-11-07 01:34:02,982 INFO L226 Difference]: Without dead ends: 396 [2021-11-07 01:34:02,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:34:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-07 01:34:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2021-11-07 01:34:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 384 states have (on average 1.2942708333333333) internal successors, (497), 393 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 497 transitions. [2021-11-07 01:34:03,033 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 497 transitions. Word has length 204 [2021-11-07 01:34:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:03,036 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 497 transitions. [2021-11-07 01:34:03,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 497 transitions. [2021-11-07 01:34:03,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:34:03,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:03,051 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:03,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:03,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:03,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:03,252 INFO L85 PathProgramCache]: Analyzing trace with hash -810577396, now seen corresponding path program 1 times [2021-11-07 01:34:03,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:03,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072795374] [2021-11-07 01:34:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:03,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:03,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:03,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:34:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:03,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:34:03,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:34:04,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:34:05,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:05,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072795374] [2021-11-07 01:34:05,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072795374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:05,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:05,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:34:05,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484206458] [2021-11-07 01:34:05,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:34:05,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:05,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:34:05,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:05,677 INFO L87 Difference]: Start difference. First operand 394 states and 497 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:05,806 INFO L93 Difference]: Finished difference Result 745 states and 947 transitions. [2021-11-07 01:34:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:05,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 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 204 [2021-11-07 01:34:05,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:05,812 INFO L225 Difference]: With dead ends: 745 [2021-11-07 01:34:05,812 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 01:34:05,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 01:34:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-07 01:34:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 372 states have (on average 1.282258064516129) internal successors, (477), 381 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 477 transitions. [2021-11-07 01:34:05,834 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 477 transitions. Word has length 204 [2021-11-07 01:34:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:05,834 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 477 transitions. [2021-11-07 01:34:05,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 477 transitions. [2021-11-07 01:34:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:34:05,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:05,839 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:05,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:06,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:06,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2097413136, now seen corresponding path program 1 times [2021-11-07 01:34:06,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:06,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956711566] [2021-11-07 01:34:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:06,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:06,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:06,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:34:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:06,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:34:06,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:34:07,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:34:08,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:08,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956711566] [2021-11-07 01:34:08,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956711566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:08,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:08,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:34:08,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107187647] [2021-11-07 01:34:08,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:08,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:34:08,633 INFO L87 Difference]: Start difference. First operand 382 states and 477 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:09,362 INFO L93 Difference]: Finished difference Result 715 states and 902 transitions. [2021-11-07 01:34:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 204 [2021-11-07 01:34:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:09,375 INFO L225 Difference]: With dead ends: 715 [2021-11-07 01:34:09,375 INFO L226 Difference]: Without dead ends: 380 [2021-11-07 01:34:09,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:34:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-07 01:34:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-11-07 01:34:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 370 states have (on average 1.281081081081081) internal successors, (474), 379 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 474 transitions. [2021-11-07 01:34:09,391 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 474 transitions. Word has length 204 [2021-11-07 01:34:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:09,391 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 474 transitions. [2021-11-07 01:34:09,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 474 transitions. [2021-11-07 01:34:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 01:34:09,395 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:09,396 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:09,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:09,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:09,616 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash -117938176, now seen corresponding path program 1 times [2021-11-07 01:34:09,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:09,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106590769] [2021-11-07 01:34:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:09,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:09,620 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:09,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:34:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:34:10,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:34:11,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:34:11,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:11,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106590769] [2021-11-07 01:34:11,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106590769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:11,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:11,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:34:11,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359507549] [2021-11-07 01:34:11,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:11,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:11,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:11,840 INFO L87 Difference]: Start difference. First operand 380 states and 474 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:11,978 INFO L93 Difference]: Finished difference Result 731 states and 930 transitions. [2021-11-07 01:34:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-07 01:34:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:11,982 INFO L225 Difference]: With dead ends: 731 [2021-11-07 01:34:11,982 INFO L226 Difference]: Without dead ends: 392 [2021-11-07 01:34:11,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-07 01:34:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-07 01:34:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 382 states have (on average 1.2722513089005236) internal successors, (486), 391 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 486 transitions. [2021-11-07 01:34:12,001 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 486 transitions. Word has length 211 [2021-11-07 01:34:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:12,002 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 486 transitions. [2021-11-07 01:34:12,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:12,002 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 486 transitions. [2021-11-07 01:34:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 01:34:12,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:12,006 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:12,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:12,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:12,219 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1390117557, now seen corresponding path program 1 times [2021-11-07 01:34:12,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:12,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859029161] [2021-11-07 01:34:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:12,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:12,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:12,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:12,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:34:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:13,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:13,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:34:13,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:34:14,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:14,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859029161] [2021-11-07 01:34:14,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859029161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:14,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [810044502] [2021-11-07 01:34:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:14,505 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:14,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:14,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:34:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:15,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:15,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:34:16,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:34:16,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [810044502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:16,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:16,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:34:16,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457525032] [2021-11-07 01:34:16,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:34:16,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:34:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:34:16,753 INFO L87 Difference]: Start difference. First operand 392 states and 486 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:16,979 INFO L93 Difference]: Finished difference Result 729 states and 920 transitions. [2021-11-07 01:34:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:16,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 214 [2021-11-07 01:34:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:16,986 INFO L225 Difference]: With dead ends: 729 [2021-11-07 01:34:16,986 INFO L226 Difference]: Without dead ends: 434 [2021-11-07 01:34:16,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:34:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-07 01:34:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2021-11-07 01:34:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 422 states have (on average 1.2464454976303319) internal successors, (526), 431 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 526 transitions. [2021-11-07 01:34:17,005 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 526 transitions. Word has length 214 [2021-11-07 01:34:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:17,005 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 526 transitions. [2021-11-07 01:34:17,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 526 transitions. [2021-11-07 01:34:17,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 01:34:17,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:17,010 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:17,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:17,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:17,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:17,429 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1491793581, now seen corresponding path program 1 times [2021-11-07 01:34:17,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:17,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762515728] [2021-11-07 01:34:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:17,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:17,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:17,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:17,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:34:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:18,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:18,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:34:19,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:19,864 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:34:19,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:19,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762515728] [2021-11-07 01:34:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762515728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:19,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [717557613] [2021-11-07 01:34:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:19,867 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:19,869 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:19,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:34:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:21,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:34:21,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:34:23,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:34:25,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [717557613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:25,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:25,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:34:25,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760622770] [2021-11-07 01:34:25,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:34:25,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:34:25,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:25,005 INFO L87 Difference]: Start difference. First operand 432 states and 526 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:25,351 INFO L93 Difference]: Finished difference Result 708 states and 867 transitions. [2021-11-07 01:34:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:34:25,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 214 [2021-11-07 01:34:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:25,355 INFO L225 Difference]: With dead ends: 708 [2021-11-07 01:34:25,355 INFO L226 Difference]: Without dead ends: 430 [2021-11-07 01:34:25,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:34:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-07 01:34:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-11-07 01:34:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 420 states have (on average 1.2452380952380953) internal successors, (523), 429 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 523 transitions. [2021-11-07 01:34:25,378 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 523 transitions. Word has length 214 [2021-11-07 01:34:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:25,380 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 523 transitions. [2021-11-07 01:34:25,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 523 transitions. [2021-11-07 01:34:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 01:34:25,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:25,384 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:25,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:34:25,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:25,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:25,809 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash -747559960, now seen corresponding path program 1 times [2021-11-07 01:34:25,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:25,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767113348] [2021-11-07 01:34:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:25,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:25,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:25,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:25,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:34:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:27,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:27,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:34:28,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:34:28,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:28,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767113348] [2021-11-07 01:34:28,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767113348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:28,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [80460464] [2021-11-07 01:34:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:28,611 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:28,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:28,612 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:28,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:34:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:30,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:34:30,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:34:31,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:34:31,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [80460464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:31,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:34:31,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 01:34:31,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478825462] [2021-11-07 01:34:31,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:34:31,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:34:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:34:31,537 INFO L87 Difference]: Start difference. First operand 430 states and 523 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:31,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:31,679 INFO L93 Difference]: Finished difference Result 739 states and 911 transitions. [2021-11-07 01:34:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:31,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 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 224 [2021-11-07 01:34:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:31,683 INFO L225 Difference]: With dead ends: 739 [2021-11-07 01:34:31,684 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 01:34:31,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:34:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 01:34:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 396. [2021-11-07 01:34:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 386 states have (on average 1.2098445595854923) internal successors, (467), 395 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 467 transitions. [2021-11-07 01:34:31,702 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 467 transitions. Word has length 224 [2021-11-07 01:34:31,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:31,702 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 467 transitions. [2021-11-07 01:34:31,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 467 transitions. [2021-11-07 01:34:31,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 01:34:31,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:31,708 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:31,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 01:34:31,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:32,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:32,125 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 948450308, now seen corresponding path program 1 times [2021-11-07 01:34:32,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:32,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434098453] [2021-11-07 01:34:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:32,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:32,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:32,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:32,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:34:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:33,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:33,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:34:34,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:34:35,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:35,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434098453] [2021-11-07 01:34:35,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434098453] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:35,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [968756497] [2021-11-07 01:34:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:35,220 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:35,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:35,222 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:35,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:34:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:37,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:37,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:34:38,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:34:38,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [968756497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:38,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974532713] [2021-11-07 01:34:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:38,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:34:38,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:38,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:34:38,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:34:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:40,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:34:40,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:34:41,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:34:42,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974532713] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:42,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:34:42,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-07 01:34:42,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581199658] [2021-11-07 01:34:42,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:34:42,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:42,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:34:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:34:42,538 INFO L87 Difference]: Start difference. First operand 396 states and 467 transitions. Second operand has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:48,017 INFO L93 Difference]: Finished difference Result 1525 states and 1866 transitions. [2021-11-07 01:34:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 01:34:48,023 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 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 224 [2021-11-07 01:34:48,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:48,030 INFO L225 Difference]: With dead ends: 1525 [2021-11-07 01:34:48,030 INFO L226 Difference]: Without dead ends: 1172 [2021-11-07 01:34:48,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=689, Invalid=1963, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:34:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-07 01:34:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-07 01:34:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1162 states have (on average 1.1764199655765921) internal successors, (1367), 1171 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1367 transitions. [2021-11-07 01:34:48,106 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1367 transitions. Word has length 224 [2021-11-07 01:34:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:48,107 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1367 transitions. [2021-11-07 01:34:48,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:34:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1367 transitions. [2021-11-07 01:34:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2021-11-07 01:34:48,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:48,114 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:48,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:48,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 01:34:48,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-07 01:34:48,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:34:48,731 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:34:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 330999072, now seen corresponding path program 2 times [2021-11-07 01:34:48,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:48,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356513994] [2021-11-07 01:34:48,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:34:48,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:48,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:48,738 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:48,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:34:51,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:34:51,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:34:51,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:34:51,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:34:53,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:34:55,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:55,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356513994] [2021-11-07 01:34:55,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356513994] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:55,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1216683731] [2021-11-07 01:34:55,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:34:55,140 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:55,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:55,149 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:55,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:34:59,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:34:59,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:34:59,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:34:59,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:35:00,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:35:02,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1216683731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:02,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348760576] [2021-11-07 01:35:02,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:35:02,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:35:02,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:02,160 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:35:02,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:35:05,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:35:05,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:35:05,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:05,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 01:35:06,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 01:35:08,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348760576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:08,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:35:08,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 6, 6] total 23 [2021-11-07 01:35:08,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558041691] [2021-11-07 01:35:08,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:35:08,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:35:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:35:08,693 INFO L87 Difference]: Start difference. First operand 1172 states and 1367 transitions. Second operand has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:13,945 INFO L93 Difference]: Finished difference Result 3445 states and 4227 transitions. [2021-11-07 01:35:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:35:13,948 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 628 [2021-11-07 01:35:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:13,960 INFO L225 Difference]: With dead ends: 3445 [2021-11-07 01:35:13,961 INFO L226 Difference]: Without dead ends: 2320 [2021-11-07 01:35:13,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3776 GetRequests, 3748 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:35:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-11-07 01:35:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1412. [2021-11-07 01:35:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1402 states have (on average 1.1547788873038516) internal successors, (1619), 1411 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1619 transitions. [2021-11-07 01:35:14,080 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1619 transitions. Word has length 628 [2021-11-07 01:35:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:14,081 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1619 transitions. [2021-11-07 01:35:14,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1619 transitions. [2021-11-07 01:35:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2021-11-07 01:35:14,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:14,088 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:14,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:14,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:14,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 01:35:14,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:14,707 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:35:14,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:14,708 INFO L85 PathProgramCache]: Analyzing trace with hash -815531232, now seen corresponding path program 3 times [2021-11-07 01:35:14,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:14,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099219216] [2021-11-07 01:35:14,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:35:14,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:14,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:14,712 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:14,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1981a92a-abd2-4ccf-b263-cbff838a655c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process