./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs --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 f72970bb51bf3ba4d77d3908a2e21504404ad3f1 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs --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 f72970bb51bf3ba4d77d3908a2e21504404ad3f1 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:07:47,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:07:47,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:07:47,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:07:47,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:07:47,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:07:47,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:07:47,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:07:47,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:07:47,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:07:47,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:07:47,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:07:47,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:07:47,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:07:47,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:07:47,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:07:47,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:07:47,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:07:47,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:07:47,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:07:47,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:07:47,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:07:47,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:07:47,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:07:47,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:07:47,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:07:47,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:07:47,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:07:47,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:07:47,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:07:47,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:07:47,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:07:47,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:07:47,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:07:47,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:07:47,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:07:47,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:07:47,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:07:47,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:07:47,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:07:47,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:07:47,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:07:48,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:07:48,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:07:48,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:07:48,067 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:07:48,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:07:48,068 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:07:48,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:07:48,068 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:07:48,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:07:48,077 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:07:48,078 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:07:48,079 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:07:48,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:07:48,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:07:48,079 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:07:48,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:07:48,081 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:07:48,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:07:48,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:07:48,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:07:48,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:07:48,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:07:48,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:07:48,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:07:48,083 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:07:48,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:07:48,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:07:48,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:07:48,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:07:48,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:07:48,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:07:48,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:07:48,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:07:48,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:07:48,088 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:07:48,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:07:48,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:07:48,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:07:48,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:07:48,089 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_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f72970bb51bf3ba4d77d3908a2e21504404ad3f1 [2021-10-16 03:07:48,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:07:48,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:07:48,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:07:48,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:07:48,553 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:07:48,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-16 03:07:48,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/b4b0ace79/3df844d71b3c4644853332b35d8fc9eb/FLAGefc5c36a4 [2021-10-16 03:07:49,314 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:07:49,316 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-16 03:07:49,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/b4b0ace79/3df844d71b3c4644853332b35d8fc9eb/FLAGefc5c36a4 [2021-10-16 03:07:49,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/b4b0ace79/3df844d71b3c4644853332b35d8fc9eb [2021-10-16 03:07:49,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:07:49,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:07:49,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:07:49,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:07:49,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:07:49,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:07:49" (1/1) ... [2021-10-16 03:07:49,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2215a4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:49, skipping insertion in model container [2021-10-16 03:07:49,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:07:49" (1/1) ... [2021-10-16 03:07:49,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:07:49,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:07:50,025 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_7dd58578-3b5e-472c-9e85-31c12b65da63/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2663,2676] [2021-10-16 03:07:50,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:07:50,056 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-16 03:07:50,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fe0f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:50, skipping insertion in model container [2021-10-16 03:07:50,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:07:50,057 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 03:07:50,060 INFO L168 Benchmark]: Toolchain (without parser) took 419.43 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 86.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:50,064 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 109.1 MB. Free memory was 89.1 MB in the beginning and 89.1 MB in the end (delta: 57.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:07:50,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.58 ms. Allocated memory is still 109.1 MB. Free memory was 71.9 MB in the beginning and 86.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:50,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 109.1 MB. Free memory was 89.1 MB in the beginning and 89.1 MB in the end (delta: 57.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.58 ms. Allocated memory is still 109.1 MB. Free memory was 71.9 MB in the beginning and 86.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:07:52,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:07:52,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:07:52,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:07:52,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:07:52,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:07:52,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:07:52,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:07:52,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:07:52,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:07:52,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:07:52,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:07:53,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:07:53,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:07:53,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:07:53,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:07:53,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:07:53,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:07:53,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:07:53,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:07:53,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:07:53,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:07:53,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:07:53,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:07:53,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:07:53,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:07:53,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:07:53,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:07:53,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:07:53,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:07:53,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:07:53,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:07:53,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:07:53,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:07:53,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:07:53,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:07:53,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:07:53,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:07:53,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:07:53,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:07:53,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:07:53,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:07:53,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:07:53,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:07:53,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:07:53,096 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:07:53,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:07:53,096 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:07:53,097 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:07:53,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:07:53,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:07:53,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:07:53,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:07:53,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:07:53,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:07:53,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:07:53,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:07:53,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:07:53,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:07:53,100 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:07:53,100 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:07:53,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:07:53,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:07:53,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:07:53,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:07:53,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:07:53,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:07:53,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:07:53,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:07:53,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:07:53,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:07:53,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:07:53,103 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:07:53,104 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:07:53,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:07:53,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:07:53,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:07:53,104 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_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f72970bb51bf3ba4d77d3908a2e21504404ad3f1 [2021-10-16 03:07:53,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:07:53,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:07:53,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:07:53,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:07:53,580 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:07:53,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-16 03:07:53,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/c48cc97a7/9fb70e953b8842ea85e6844f8eeefc45/FLAG43e351009 [2021-10-16 03:07:54,262 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:07:54,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-16 03:07:54,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/c48cc97a7/9fb70e953b8842ea85e6844f8eeefc45/FLAG43e351009 [2021-10-16 03:07:54,575 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/data/c48cc97a7/9fb70e953b8842ea85e6844f8eeefc45 [2021-10-16 03:07:54,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:07:54,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:07:54,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:07:54,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:07:54,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:07:54,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:07:54" (1/1) ... [2021-10-16 03:07:54,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3caa1350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:54, skipping insertion in model container [2021-10-16 03:07:54,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:07:54" (1/1) ... [2021-10-16 03:07:54,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:07:54,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:07:54,873 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_7dd58578-3b5e-472c-9e85-31c12b65da63/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2663,2676] [2021-10-16 03:07:54,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:07:54,902 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 03:07:54,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:07:54,934 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_7dd58578-3b5e-472c-9e85-31c12b65da63/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2663,2676] [2021-10-16 03:07:54,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:07:54,948 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:07:55,043 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_7dd58578-3b5e-472c-9e85-31c12b65da63/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2663,2676] [2021-10-16 03:07:55,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:07:55,068 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:07:55,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55 WrapperNode [2021-10-16 03:07:55,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:07:55,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:07:55,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:07:55,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:07:55,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:07:55,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:07:55,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:07:55,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:07:55,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:07:55,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:07:55,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:07:55,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:07:55,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (1/1) ... [2021-10-16 03:07:55,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:07:55,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:07:55,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:07:55,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:07:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:07:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:07:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:07:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-16 03:07:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-16 03:07:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-16 03:07:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-16 03:07:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-16 03:07:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-16 03:07:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-16 03:07:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-16 03:07:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:07:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:07:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:07:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:07:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:07:55,379 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 03:07:56,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:07:56,832 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-16 03:07:56,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:07:56 BoogieIcfgContainer [2021-10-16 03:07:56,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:07:56,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:07:56,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:07:56,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:07:56,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:07:54" (1/3) ... [2021-10-16 03:07:56,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d77ac16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:07:56, skipping insertion in model container [2021-10-16 03:07:56,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:07:55" (2/3) ... [2021-10-16 03:07:56,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d77ac16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:07:56, skipping insertion in model container [2021-10-16 03:07:56,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:07:56" (3/3) ... [2021-10-16 03:07:56,851 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-10-16 03:07:56,859 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 03:07:56,860 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:07:56,860 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:07:56,861 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 03:07:56,960 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,961 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,963 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,963 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,964 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,964 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,966 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,966 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,967 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,967 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,972 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,973 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,974 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,975 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,976 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,976 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,976 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,980 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,980 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,980 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,981 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,981 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,982 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,982 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,982 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,983 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,984 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,984 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,984 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,990 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,990 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,990 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,991 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,991 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,992 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,992 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,992 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,993 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,993 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,993 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,994 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,994 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,994 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,996 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:56,997 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,000 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,002 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,003 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,003 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,011 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,011 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,011 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,012 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,012 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,013 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,013 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,014 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,014 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,015 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,016 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,016 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,017 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,017 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,017 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,018 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,018 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,019 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,019 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,019 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,019 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,020 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,020 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,020 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,021 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,021 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,021 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,022 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,022 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,022 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,022 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,023 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,023 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,023 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,024 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,024 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,024 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,024 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,025 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,025 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,025 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,026 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,026 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,026 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,027 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,027 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,028 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,028 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,028 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,029 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,029 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,029 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,030 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,030 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,030 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,030 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,038 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,038 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,039 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,039 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,039 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,041 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,045 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,045 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,045 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,046 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,046 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,046 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,047 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,049 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,049 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,050 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,051 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,052 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,052 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,052 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,052 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,053 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 03:07:57,061 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-16 03:07:57,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:07:57,150 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, mConcurrency=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 [2021-10-16 03:07:57,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 03:07:57,181 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 03:07:57,197 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 257 transitions, 538 flow [2021-10-16 03:07:57,201 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 257 transitions, 538 flow [2021-10-16 03:07:57,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 241 places, 257 transitions, 538 flow [2021-10-16 03:07:57,415 INFO L129 PetriNetUnfolder]: 26/254 cut-off events. [2021-10-16 03:07:57,416 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-16 03:07:57,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 26/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 218 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 210. Up to 3 conditions per place. [2021-10-16 03:07:57,437 INFO L116 LiptonReduction]: Number of co-enabled transitions 3162 [2021-10-16 03:08:59,837 INFO L131 LiptonReduction]: Checked pairs total: 5729 [2021-10-16 03:08:59,838 INFO L133 LiptonReduction]: Total number of compositions: 271 [2021-10-16 03:08:59,856 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 106 flow [2021-10-16 03:08:59,898 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 313 states, 312 states have (on average 3.676282051282051) internal successors, (1147), 312 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 312 states have (on average 3.676282051282051) internal successors, (1147), 312 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 03:08:59,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:08:59,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:08:59,925 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:08:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:08:59,932 INFO L82 PathProgramCache]: Analyzing trace with hash 401556214, now seen corresponding path program 1 times [2021-10-16 03:08:59,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:08:59,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126689651] [2021-10-16 03:08:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:08:59,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:08:59,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:08:59,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:08:59,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:09:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:00,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:00,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:00,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:09:00,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:00,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126689651] [2021-10-16 03:09:00,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126689651] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:00,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:00,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [] total 5 [2021-10-16 03:09:00,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438299747] [2021-10-16 03:09:00,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:09:00,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:09:00,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:09:00,569 INFO L87 Difference]: Start difference. First operand has 313 states, 312 states have (on average 3.676282051282051) internal successors, (1147), 312 states have internal predecessors, (1147), 0 states have call successors, (0), 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 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:01,603 INFO L93 Difference]: Finished difference Result 314 states and 1148 transitions. [2021-10-16 03:09:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:09:01,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-16 03:09:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:01,623 INFO L225 Difference]: With dead ends: 314 [2021-10-16 03:09:01,623 INFO L226 Difference]: Without dead ends: 314 [2021-10-16 03:09:01,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:09:01,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-16 03:09:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-10-16 03:09:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.6677316293929714) internal successors, (1148), 313 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1148 transitions. [2021-10-16 03:09:01,717 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1148 transitions. Word has length 22 [2021-10-16 03:09:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:01,717 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1148 transitions. [2021-10-16 03:09:01,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1148 transitions. [2021-10-16 03:09:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 03:09:01,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:01,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:01,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:01,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:01,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:01,946 INFO L82 PathProgramCache]: Analyzing trace with hash 803731460, now seen corresponding path program 1 times [2021-10-16 03:09:01,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:01,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076346007] [2021-10-16 03:09:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:01,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:01,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:01,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:09:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:02,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:09:02,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:09:02,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:09:02,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:02,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076346007] [2021-10-16 03:09:02,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076346007] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:02,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:02,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 7 [2021-10-16 03:09:02,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334231537] [2021-10-16 03:09:02,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:09:02,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:09:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:09:02,511 INFO L87 Difference]: Start difference. First operand 314 states and 1148 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:03,595 INFO L93 Difference]: Finished difference Result 316 states and 1150 transitions. [2021-10-16 03:09:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:09:03,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 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 23 [2021-10-16 03:09:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:03,602 INFO L225 Difference]: With dead ends: 316 [2021-10-16 03:09:03,602 INFO L226 Difference]: Without dead ends: 316 [2021-10-16 03:09:03,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-16 03:09:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-10-16 03:09:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.6507936507936507) internal successors, (1150), 315 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1150 transitions. [2021-10-16 03:09:03,639 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1150 transitions. Word has length 23 [2021-10-16 03:09:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:03,640 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1150 transitions. [2021-10-16 03:09:03,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1150 transitions. [2021-10-16 03:09:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 03:09:03,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:03,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:03,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:03,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:03,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2020941283, now seen corresponding path program 1 times [2021-10-16 03:09:03,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:03,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780632319] [2021-10-16 03:09:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:03,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:03,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:03,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:03,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:09:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:04,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 03:09:04,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:04,893 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-10-16 03:09:04,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 126 treesize of output 252 [2021-10-16 03:09:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:06,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:06,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:06,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780632319] [2021-10-16 03:09:06,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780632319] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:06,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:06,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 03:09:06,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830415512] [2021-10-16 03:09:06,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:09:06,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:09:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:06,682 INFO L87 Difference]: Start difference. First operand 316 states and 1150 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:06,966 INFO L93 Difference]: Finished difference Result 609 states and 2245 transitions. [2021-10-16 03:09:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:09:06,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 25 [2021-10-16 03:09:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:06,975 INFO L225 Difference]: With dead ends: 609 [2021-10-16 03:09:06,975 INFO L226 Difference]: Without dead ends: 594 [2021-10-16 03:09:06,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:09:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-10-16 03:09:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 416. [2021-10-16 03:09:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.744578313253012) internal successors, (1554), 415 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1554 transitions. [2021-10-16 03:09:07,025 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1554 transitions. Word has length 25 [2021-10-16 03:09:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:07,027 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1554 transitions. [2021-10-16 03:09:07,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1554 transitions. [2021-10-16 03:09:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:07,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:07,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:07,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:07,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:07,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:07,252 INFO L82 PathProgramCache]: Analyzing trace with hash -844980366, now seen corresponding path program 1 times [2021-10-16 03:09:07,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:07,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335986943] [2021-10-16 03:09:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:07,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:07,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:07,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:07,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:09:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:07,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:09:07,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:07,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:07,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:07,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335986943] [2021-10-16 03:09:07,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335986943] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:07,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:07,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:09:07,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097357490] [2021-10-16 03:09:07,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:09:07,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:09:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:09:07,733 INFO L87 Difference]: Start difference. First operand 416 states and 1554 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:08,650 INFO L93 Difference]: Finished difference Result 640 states and 2267 transitions. [2021-10-16 03:09:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:09:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:08,660 INFO L225 Difference]: With dead ends: 640 [2021-10-16 03:09:08,660 INFO L226 Difference]: Without dead ends: 620 [2021-10-16 03:09:08,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:09:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-10-16 03:09:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 494. [2021-10-16 03:09:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.665314401622718) internal successors, (1807), 493 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1807 transitions. [2021-10-16 03:09:08,696 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1807 transitions. Word has length 28 [2021-10-16 03:09:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:08,697 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1807 transitions. [2021-10-16 03:09:08,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1807 transitions. [2021-10-16 03:09:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:08,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:08,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:08,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 03:09:08,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:08,917 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:08,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:08,918 INFO L82 PathProgramCache]: Analyzing trace with hash 972025783, now seen corresponding path program 1 times [2021-10-16 03:09:08,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:08,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555424832] [2021-10-16 03:09:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:08,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:08,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:08,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:08,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:09:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:09,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:09,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:09,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:09,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:09,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555424832] [2021-10-16 03:09:09,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555424832] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:09,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:09,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:09,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476448712] [2021-10-16 03:09:09,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:09,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:09,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:09,707 INFO L87 Difference]: Start difference. First operand 494 states and 1807 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:11,971 INFO L93 Difference]: Finished difference Result 1150 states and 4246 transitions. [2021-10-16 03:09:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 03:09:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:11,987 INFO L225 Difference]: With dead ends: 1150 [2021-10-16 03:09:11,987 INFO L226 Difference]: Without dead ends: 1120 [2021-10-16 03:09:11,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 174.9ms TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:09:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-10-16 03:09:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 620. [2021-10-16 03:09:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.6623586429725363) internal successors, (2267), 619 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2267 transitions. [2021-10-16 03:09:12,037 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 2267 transitions. Word has length 28 [2021-10-16 03:09:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:12,038 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 2267 transitions. [2021-10-16 03:09:12,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 2267 transitions. [2021-10-16 03:09:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:12,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:12,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:12,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:12,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:12,258 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:12,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:12,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1538228687, now seen corresponding path program 2 times [2021-10-16 03:09:12,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:12,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754639887] [2021-10-16 03:09:12,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:09:12,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:12,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:12,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:12,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:09:12,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:09:12,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:12,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:12,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:13,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:13,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:13,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754639887] [2021-10-16 03:09:13,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754639887] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:13,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:13,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:13,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680733735] [2021-10-16 03:09:13,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:13,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:13,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:13,197 INFO L87 Difference]: Start difference. First operand 620 states and 2267 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:15,974 INFO L93 Difference]: Finished difference Result 1662 states and 6484 transitions. [2021-10-16 03:09:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 03:09:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:15,998 INFO L225 Difference]: With dead ends: 1662 [2021-10-16 03:09:15,999 INFO L226 Difference]: Without dead ends: 1612 [2021-10-16 03:09:15,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 221.5ms TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:09:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2021-10-16 03:09:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 872. [2021-10-16 03:09:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 3.970149253731343) internal successors, (3458), 871 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3458 transitions. [2021-10-16 03:09:16,079 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 3458 transitions. Word has length 28 [2021-10-16 03:09:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:16,079 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 3458 transitions. [2021-10-16 03:09:16,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 3458 transitions. [2021-10-16 03:09:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:16,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:16,086 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:16,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:16,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:16,305 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:16,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:16,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1537709877, now seen corresponding path program 3 times [2021-10-16 03:09:16,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:16,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780590942] [2021-10-16 03:09:16,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:09:16,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:16,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:16,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:16,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:09:16,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 03:09:16,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:16,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:16,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:17,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:17,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:17,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780590942] [2021-10-16 03:09:17,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780590942] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:17,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:17,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:17,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464664199] [2021-10-16 03:09:17,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:17,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:17,293 INFO L87 Difference]: Start difference. First operand 872 states and 3458 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:18,785 INFO L93 Difference]: Finished difference Result 1620 states and 6061 transitions. [2021-10-16 03:09:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 03:09:18,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:18,808 INFO L225 Difference]: With dead ends: 1620 [2021-10-16 03:09:18,808 INFO L226 Difference]: Without dead ends: 1620 [2021-10-16 03:09:18,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 236.3ms TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:09:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-10-16 03:09:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 974. [2021-10-16 03:09:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 3.935251798561151) internal successors, (3829), 973 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 3829 transitions. [2021-10-16 03:09:18,897 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 3829 transitions. Word has length 28 [2021-10-16 03:09:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:18,898 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 3829 transitions. [2021-10-16 03:09:18,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 3829 transitions. [2021-10-16 03:09:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:18,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:18,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:18,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:19,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:19,121 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1818244819, now seen corresponding path program 4 times [2021-10-16 03:09:19,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:19,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209941575] [2021-10-16 03:09:19,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 03:09:19,122 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:19,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:19,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:19,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:09:19,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 03:09:19,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:19,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:19,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:19,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:19,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:19,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209941575] [2021-10-16 03:09:19,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209941575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:19,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:19,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:19,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804031782] [2021-10-16 03:09:19,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:19,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:19,898 INFO L87 Difference]: Start difference. First operand 974 states and 3829 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:21,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:21,372 INFO L93 Difference]: Finished difference Result 1152 states and 4381 transitions. [2021-10-16 03:09:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:09:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:21,390 INFO L225 Difference]: With dead ends: 1152 [2021-10-16 03:09:21,390 INFO L226 Difference]: Without dead ends: 1152 [2021-10-16 03:09:21,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:09:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-10-16 03:09:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 880. [2021-10-16 03:09:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 3.9180887372013653) internal successors, (3444), 879 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3444 transitions. [2021-10-16 03:09:21,456 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3444 transitions. Word has length 28 [2021-10-16 03:09:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:21,457 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 3444 transitions. [2021-10-16 03:09:21,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3444 transitions. [2021-10-16 03:09:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:21,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:21,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:21,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:21,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:21,679 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:21,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1167313669, now seen corresponding path program 5 times [2021-10-16 03:09:21,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:21,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852982382] [2021-10-16 03:09:21,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 03:09:21,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:21,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:21,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:21,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:09:22,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:09:22,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:22,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:22,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:22,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:22,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:22,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852982382] [2021-10-16 03:09:22,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852982382] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:22,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:22,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:22,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832569436] [2021-10-16 03:09:22,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:22,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:22,468 INFO L87 Difference]: Start difference. First operand 880 states and 3444 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:25,218 INFO L93 Difference]: Finished difference Result 1958 states and 7543 transitions. [2021-10-16 03:09:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 03:09:25,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 03:09:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:25,238 INFO L225 Difference]: With dead ends: 1958 [2021-10-16 03:09:25,238 INFO L226 Difference]: Without dead ends: 1864 [2021-10-16 03:09:25,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 284.6ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-10-16 03:09:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-10-16 03:09:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 848. [2021-10-16 03:09:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.689492325855962) internal successors, (3125), 847 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3125 transitions. [2021-10-16 03:09:25,332 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 3125 transitions. Word has length 28 [2021-10-16 03:09:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:25,334 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 3125 transitions. [2021-10-16 03:09:25,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:25,334 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 3125 transitions. [2021-10-16 03:09:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:25,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:25,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:25,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:25,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:25,562 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:25,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2130325855, now seen corresponding path program 6 times [2021-10-16 03:09:25,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:25,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186181041] [2021-10-16 03:09:25,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-16 03:09:25,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:25,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:25,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:25,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 03:09:26,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-16 03:09:26,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:26,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:26,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:26,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:26,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186181041] [2021-10-16 03:09:26,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186181041] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:26,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:26,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:26,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132072321] [2021-10-16 03:09:26,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:26,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:26,462 INFO L87 Difference]: Start difference. First operand 848 states and 3125 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:27,675 INFO L93 Difference]: Finished difference Result 940 states and 3370 transitions. [2021-10-16 03:09:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:09:27,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:27,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:27,684 INFO L225 Difference]: With dead ends: 940 [2021-10-16 03:09:27,684 INFO L226 Difference]: Without dead ends: 924 [2021-10-16 03:09:27,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 167.3ms TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-16 03:09:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-16 03:09:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 844. [2021-10-16 03:09:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.6892052194543297) internal successors, (3110), 843 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3110 transitions. [2021-10-16 03:09:27,751 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3110 transitions. Word has length 28 [2021-10-16 03:09:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:27,751 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 3110 transitions. [2021-10-16 03:09:27,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3110 transitions. [2021-10-16 03:09:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:27,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:27,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:27,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:27,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:27,973 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1369706567, now seen corresponding path program 7 times [2021-10-16 03:09:27,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:27,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539903559] [2021-10-16 03:09:27,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-16 03:09:27,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:27,975 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:27,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 03:09:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:28,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:28,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:28,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:28,764 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:28,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539903559] [2021-10-16 03:09:28,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539903559] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:28,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:28,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:28,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757982656] [2021-10-16 03:09:28,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:28,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:28,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:28,766 INFO L87 Difference]: Start difference. First operand 844 states and 3110 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:30,403 INFO L93 Difference]: Finished difference Result 1048 states and 3732 transitions. [2021-10-16 03:09:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:09:30,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:30,417 INFO L225 Difference]: With dead ends: 1048 [2021-10-16 03:09:30,417 INFO L226 Difference]: Without dead ends: 1036 [2021-10-16 03:09:30,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 158.7ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:09:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-16 03:09:30,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 862. [2021-10-16 03:09:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.7026713124274098) internal successors, (3188), 861 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3188 transitions. [2021-10-16 03:09:30,458 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 3188 transitions. Word has length 28 [2021-10-16 03:09:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:30,458 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 3188 transitions. [2021-10-16 03:09:30,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 3188 transitions. [2021-10-16 03:09:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:30,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:30,463 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:30,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:30,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:30,680 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash -293498077, now seen corresponding path program 8 times [2021-10-16 03:09:30,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:30,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330451105] [2021-10-16 03:09:30,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:09:30,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:30,682 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:30,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:09:31,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:09:31,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:31,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:31,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:31,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:31,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:31,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330451105] [2021-10-16 03:09:31,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330451105] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:09:31,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:09:31,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-16 03:09:31,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856544828] [2021-10-16 03:09:31,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:09:31,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:09:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:31,669 INFO L87 Difference]: Start difference. First operand 862 states and 3188 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:32,985 INFO L93 Difference]: Finished difference Result 1084 states and 3950 transitions. [2021-10-16 03:09:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:09:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:32,995 INFO L225 Difference]: With dead ends: 1084 [2021-10-16 03:09:32,996 INFO L226 Difference]: Without dead ends: 1010 [2021-10-16 03:09:32,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 131.1ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:09:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-10-16 03:09:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 594. [2021-10-16 03:09:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 3.688026981450253) internal successors, (2187), 593 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 2187 transitions. [2021-10-16 03:09:33,033 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 2187 transitions. Word has length 28 [2021-10-16 03:09:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:33,034 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 2187 transitions. [2021-10-16 03:09:33,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 2187 transitions. [2021-10-16 03:09:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:33,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:33,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:33,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-16 03:09:33,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:33,256 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:33,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:33,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1598494755, now seen corresponding path program 9 times [2021-10-16 03:09:33,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:33,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428494446] [2021-10-16 03:09:33,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:09:33,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:33,258 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:33,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:09:33,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 03:09:33,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:33,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:33,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:34,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:34,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:34,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428494446] [2021-10-16 03:09:34,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428494446] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:34,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:34,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:34,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925617964] [2021-10-16 03:09:34,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:34,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:34,177 INFO L87 Difference]: Start difference. First operand 594 states and 2187 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:36,436 INFO L93 Difference]: Finished difference Result 844 states and 3127 transitions. [2021-10-16 03:09:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 03:09:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:36,446 INFO L225 Difference]: With dead ends: 844 [2021-10-16 03:09:36,446 INFO L226 Difference]: Without dead ends: 826 [2021-10-16 03:09:36,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 240.3ms TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-10-16 03:09:36,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-16 03:09:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 594. [2021-10-16 03:09:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 3.6913996627318717) internal successors, (2189), 593 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 2189 transitions. [2021-10-16 03:09:36,475 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 2189 transitions. Word has length 28 [2021-10-16 03:09:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:36,476 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 2189 transitions. [2021-10-16 03:09:36,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 2189 transitions. [2021-10-16 03:09:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:36,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:36,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:36,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:36,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:36,698 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:36,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1211383215, now seen corresponding path program 10 times [2021-10-16 03:09:36,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:36,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815437381] [2021-10-16 03:09:36,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-16 03:09:36,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:36,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:36,701 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:36,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 03:09:37,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-16 03:09:37,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:37,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:37,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:37,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:37,542 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:37,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815437381] [2021-10-16 03:09:37,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815437381] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:37,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:37,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:37,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353170880] [2021-10-16 03:09:37,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:37,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:37,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:37,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:37,544 INFO L87 Difference]: Start difference. First operand 594 states and 2189 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:39,891 INFO L93 Difference]: Finished difference Result 1302 states and 4861 transitions. [2021-10-16 03:09:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 03:09:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:39,903 INFO L225 Difference]: With dead ends: 1302 [2021-10-16 03:09:39,903 INFO L226 Difference]: Without dead ends: 1278 [2021-10-16 03:09:39,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 274.4ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-10-16 03:09:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-10-16 03:09:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 660. [2021-10-16 03:09:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 3.748103186646434) internal successors, (2470), 659 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2470 transitions. [2021-10-16 03:09:39,942 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2470 transitions. Word has length 28 [2021-10-16 03:09:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:39,943 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2470 transitions. [2021-10-16 03:09:39,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2470 transitions. [2021-10-16 03:09:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:09:39,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:39,947 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:39,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:40,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:40,161 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:40,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1211902025, now seen corresponding path program 11 times [2021-10-16 03:09:40,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:40,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809761057] [2021-10-16 03:09:40,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-16 03:09:40,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:40,164 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:40,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 03:09:40,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:09:40,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:40,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:09:40,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:41,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:41,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:41,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809761057] [2021-10-16 03:09:41,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809761057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:09:41,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:09:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 03:09:41,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903849632] [2021-10-16 03:09:41,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:09:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:09:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:09:41,339 INFO L87 Difference]: Start difference. First operand 660 states and 2470 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:42,163 INFO L93 Difference]: Finished difference Result 872 states and 3116 transitions. [2021-10-16 03:09:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:09:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-10-16 03:09:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:42,169 INFO L225 Difference]: With dead ends: 872 [2021-10-16 03:09:42,170 INFO L226 Difference]: Without dead ends: 872 [2021-10-16 03:09:42,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:09:42,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-16 03:09:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2021-10-16 03:09:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.7215815485996706) internal successors, (2259), 607 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2259 transitions. [2021-10-16 03:09:42,199 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2259 transitions. Word has length 28 [2021-10-16 03:09:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:42,199 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2259 transitions. [2021-10-16 03:09:42,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2259 transitions. [2021-10-16 03:09:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 03:09:42,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:42,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:09:42,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:42,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:42,416 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:42,417 INFO L82 PathProgramCache]: Analyzing trace with hash -646076680, now seen corresponding path program 1 times [2021-10-16 03:09:42,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:42,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479251088] [2021-10-16 03:09:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:42,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:42,418 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:42,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 03:09:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:42,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:09:42,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:09:43,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:09:43,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:43,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479251088] [2021-10-16 03:09:43,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479251088] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:09:43,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1147951441] [2021-10-16 03:09:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:43,622 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:09:43,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:09:43,634 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:09:43,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 03:09:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:44,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:09:44,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:44,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:09:44,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1147951441] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:09:44,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12056983] [2021-10-16 03:09:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:44,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:09:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:09:44,951 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:09:44,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 03:09:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:09:45,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:09:45,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:09:45,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:09:45,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12056983] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:09:45,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:09:45,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 5, 5] total 24 [2021-10-16 03:09:45,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070931165] [2021-10-16 03:09:45,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-16 03:09:45,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-16 03:09:45,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-10-16 03:09:45,955 INFO L87 Difference]: Start difference. First operand 608 states and 2259 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:54,889 INFO L93 Difference]: Finished difference Result 1558 states and 5965 transitions. [2021-10-16 03:09:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-16 03:09:54,890 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-16 03:09:54,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:54,899 INFO L225 Difference]: With dead ends: 1558 [2021-10-16 03:09:54,899 INFO L226 Difference]: Without dead ends: 1505 [2021-10-16 03:09:54,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 2371.0ms TimeCoverageRelationStatistics Valid=501, Invalid=1949, Unknown=0, NotChecked=0, Total=2450 [2021-10-16 03:09:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-10-16 03:09:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 865. [2021-10-16 03:09:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 3.892361111111111) internal successors, (3363), 864 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 3363 transitions. [2021-10-16 03:09:54,946 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 3363 transitions. Word has length 29 [2021-10-16 03:09:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:54,947 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 3363 transitions. [2021-10-16 03:09:54,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 3363 transitions. [2021-10-16 03:09:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 03:09:54,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:54,962 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 03:09:54,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:55,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-16 03:09:55,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:55,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:09:55,568 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -40713427, now seen corresponding path program 2 times [2021-10-16 03:09:55,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:55,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803315868] [2021-10-16 03:09:55,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:09:55,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:55,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:55,570 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:55,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 03:09:56,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:09:56,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:56,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 03:09:56,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:09:56,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 03:09:56,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:56,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803315868] [2021-10-16 03:09:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803315868] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:09:56,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 03:09:56,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-10-16 03:09:56,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804160389] [2021-10-16 03:09:56,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:09:56,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:09:56,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:09:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:09:56,857 INFO L87 Difference]: Start difference. First operand 865 states and 3363 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:09:57,947 INFO L93 Difference]: Finished difference Result 1131 states and 4426 transitions. [2021-10-16 03:09:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:09:57,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 32 [2021-10-16 03:09:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:09:57,952 INFO L225 Difference]: With dead ends: 1131 [2021-10-16 03:09:57,952 INFO L226 Difference]: Without dead ends: 1131 [2021-10-16 03:09:57,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 166.8ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:09:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-10-16 03:09:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 843. [2021-10-16 03:09:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 3.8717339667458432) internal successors, (3260), 842 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 3260 transitions. [2021-10-16 03:09:58,010 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 3260 transitions. Word has length 32 [2021-10-16 03:09:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:09:58,010 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 3260 transitions. [2021-10-16 03:09:58,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:09:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 3260 transitions. [2021-10-16 03:09:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 03:09:58,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:58,015 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 03:09:58,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 03:09:58,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:09:58,231 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:09:58,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:58,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1694449795, now seen corresponding path program 3 times [2021-10-16 03:09:58,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:09:58,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60205405] [2021-10-16 03:09:58,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:09:58,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:09:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:09:58,233 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:09:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 03:09:59,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 03:09:59,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:09:59,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:09:59,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:09:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:09:59,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:09:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:09:59,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:09:59,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60205405] [2021-10-16 03:09:59,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60205405] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:09:59,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1440423757] [2021-10-16 03:09:59,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:09:59,704 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:09:59,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:09:59,705 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:09:59,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 03:10:00,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 03:10:00,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:10:00,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 03:10:00,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:10:01,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:10:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1440423757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:01,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671891903] [2021-10-16 03:10:01,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:10:01,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:10:01,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:10:01,540 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:10:01,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-16 03:10:02,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-16 03:10:02,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:10:02,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:10:02,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:10:02,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:10:02,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671891903] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:02,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:10:02,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 5, 5] total 20 [2021-10-16 03:10:02,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910814360] [2021-10-16 03:10:02,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-16 03:10:02,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:10:02,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-16 03:10:02,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-16 03:10:02,601 INFO L87 Difference]: Start difference. First operand 843 states and 3260 transitions. Second operand has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:10:07,198 INFO L93 Difference]: Finished difference Result 2521 states and 9367 transitions. [2021-10-16 03:10:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-16 03:10:07,199 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 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 32 [2021-10-16 03:10:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:10:07,208 INFO L225 Difference]: With dead ends: 2521 [2021-10-16 03:10:07,208 INFO L226 Difference]: Without dead ends: 2473 [2021-10-16 03:10:07,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1522.2ms TimeCoverageRelationStatistics Valid=564, Invalid=1598, Unknown=0, NotChecked=0, Total=2162 [2021-10-16 03:10:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-10-16 03:10:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1125. [2021-10-16 03:10:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1124 states have (on average 3.758896797153025) internal successors, (4225), 1124 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 4225 transitions. [2021-10-16 03:10:07,278 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 4225 transitions. Word has length 32 [2021-10-16 03:10:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:10:07,278 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 4225 transitions. [2021-10-16 03:10:07,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.2) internal successors, (84), 20 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 4225 transitions. [2021-10-16 03:10:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 03:10:07,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:10:07,283 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 03:10:07,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:07,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-16 03:10:07,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-16 03:10:07,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:10:07,890 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:10:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:10:07,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1311615948, now seen corresponding path program 1 times [2021-10-16 03:10:07,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:10:07,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52391842] [2021-10-16 03:10:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:10:07,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:10:07,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:10:07,892 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:10:07,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 03:10:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:10:08,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:10:08,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:10:08,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:10:09,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:10:09,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52391842] [2021-10-16 03:10:09,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52391842] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:09,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1669036740] [2021-10-16 03:10:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:10:09,104 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:10:09,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:10:09,105 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:10:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 03:10:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:10:10,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:10:10,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:10:10,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 03:10:10,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1669036740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:10,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079448544] [2021-10-16 03:10:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:10:10,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:10:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:10:10,803 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:10:10,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 03:10:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:10:11,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:10:11,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:10:11,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:10:11,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079448544] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:11,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:10:11,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 5, 5] total 20 [2021-10-16 03:10:11,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120701362] [2021-10-16 03:10:11,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-16 03:10:11,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:10:11,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-16 03:10:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-16 03:10:11,871 INFO L87 Difference]: Start difference. First operand 1125 states and 4225 transitions. Second operand has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:10:15,861 INFO L93 Difference]: Finished difference Result 1925 states and 7163 transitions. [2021-10-16 03:10:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-16 03:10:15,863 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 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 32 [2021-10-16 03:10:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:10:15,875 INFO L225 Difference]: With dead ends: 1925 [2021-10-16 03:10:15,875 INFO L226 Difference]: Without dead ends: 1925 [2021-10-16 03:10:15,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1402.1ms TimeCoverageRelationStatistics Valid=505, Invalid=1565, Unknown=0, NotChecked=0, Total=2070 [2021-10-16 03:10:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2021-10-16 03:10:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 803. [2021-10-16 03:10:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 3.7231920199501247) internal successors, (2986), 802 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2986 transitions. [2021-10-16 03:10:15,950 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2986 transitions. Word has length 32 [2021-10-16 03:10:15,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:10:15,950 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2986 transitions. [2021-10-16 03:10:15,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.35) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2986 transitions. [2021-10-16 03:10:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 03:10:15,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:10:15,955 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 03:10:16,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:16,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:16,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:16,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:10:16,579 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-16 03:10:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:10:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash -247193430, now seen corresponding path program 1 times [2021-10-16 03:10:16,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:10:16,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627699938] [2021-10-16 03:10:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:10:16,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:10:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:10:16,582 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:10:16,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 03:10:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:10:17,918 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:10:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:10:18,705 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 03:10:18,705 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:10:18,706 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:10:18,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 03:10:18,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 03:10:18,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-16 03:10:18,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:18,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:10:18,939 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 03:10:18,939 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:10:19,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:10:19 BasicIcfg [2021-10-16 03:10:19,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:10:19,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:10:19,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:10:19,066 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:10:19,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:07:56" (3/4) ... [2021-10-16 03:10:19,069 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:10:19,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd58578-3b5e-472c-9e85-31c12b65da63/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:10:19,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:10:19,258 INFO L168 Benchmark]: Toolchain (without parser) took 144677.60 ms. Allocated memory was 58.7 MB in the beginning and 161.5 MB in the end (delta: 102.8 MB). Free memory was 36.3 MB in the beginning and 79.4 MB in the end (delta: -43.1 MB). Peak memory consumption was 99.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,259 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:10:19,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.13 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 40.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.17 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 37.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,260 INFO L168 Benchmark]: Boogie Preprocessor took 120.38 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 35.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,261 INFO L168 Benchmark]: RCFGBuilder took 1582.35 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.7 MB in the beginning and 33.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,261 INFO L168 Benchmark]: TraceAbstraction took 142225.20 ms. Allocated memory was 71.3 MB in the beginning and 161.5 MB in the end (delta: 90.2 MB). Free memory was 33.6 MB in the beginning and 52.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 71.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,262 INFO L168 Benchmark]: Witness Printer took 191.15 ms. Allocated memory is still 161.5 MB. Free memory was 52.2 MB in the beginning and 79.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 39.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 487.13 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 40.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.17 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 37.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 120.38 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 35.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1582.35 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.7 MB in the beginning and 33.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 142225.20 ms. Allocated memory was 71.3 MB in the beginning and 161.5 MB in the end (delta: 90.2 MB). Free memory was 33.6 MB in the beginning and 52.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 71.0 MB. Max. memory is 16.1 GB. * Witness Printer took 191.15 ms. Allocated memory is still 161.5 MB. Free memory was 52.2 MB in the beginning and 79.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 62636.9ms, 241 PlacesBefore, 42 PlacesAfterwards, 257 TransitionsBefore, 41 TransitionsAfterwards, 3162 CoEnabledTransitionPairs, 8 FixpointIterations, 163 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 36 TrivialYvCompositions, 16 ConcurrentYvCompositions, 17 ChoiceCompositions, 271 TotalNumberOfCompositions, 5729 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3832, positive: 3662, positive conditional: 0, positive unconditional: 3662, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2199, positive: 2146, positive conditional: 0, positive unconditional: 2146, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2199, positive: 2146, positive conditional: 0, positive unconditional: 2146, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11221, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11221, negative conditional: 0, negative unconditional: 11221, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3832, positive: 1516, positive conditional: 0, positive unconditional: 1516, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 2199, unknown conditional: 0, unknown unconditional: 2199] , Statistics on independence cache: Total cache size (in pairs): 218, Positive cache size: 200, Positive conditional cache size: 0, Positive unconditional cache size: 200, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int *A, *B, *C; [L42] 0 int mina, minb, minc, N, p; [L86] 0 pthread_t t1, t2, t3; [L88] 0 N = __VERIFIER_nondet_int() [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L118] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L119] 0 int i = 0; VAL [A={0:0}, B={0:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={0:0}, B={0:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={0:0}, B={0:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND FALSE 0 !(i < size) [L122] 0 return arr; [L90] 0 A = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L118] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L119] 0 int i = 0; VAL [A={1:0}, B={0:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={0:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={0:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND FALSE 0 !(i < size) [L122] 0 return arr; [L91] 0 B = create_fresh_int_array(N) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L118] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L119] 0 int i = 0; VAL [A={1:0}, B={2:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={2:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND TRUE 0 i < size [L120] 0 arr[i] = __VERIFIER_nondet_int() [L119] 0 i++ VAL [A={1:0}, B={2:0}, C={0:0}, mina=0, minb=0, minc=0, N=2, p=0] [L119] COND FALSE 0 !(i < size) [L122] 0 return arr; [L92] 0 C = create_fresh_int_array(N) [L94] 0 p = 1 [L96] EXPR 0 A[0] [L96] 0 mina = A[0] [L97] EXPR 0 B[0] [L97] 0 minb = B[0] [L98] EXPR 0 A[0] [L98] EXPR 0 B[0] [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L128] 0 return a + b; [L98] 0 minc = plus(A[0], B[0]) [L101] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={1:0}, B={2:0}, C={3:0}, mina=-2147480485, minb=3072, minc=-2147477413, N=2, p=1] [L48] 1 int i=1; VAL [A={1:0}, B={2:0}, C={3:0}, i=1, mina=-2147480485, minb=3072, minc=-2147477413, N=2, p=1] [L102] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={1:0}, B={2:0}, C={3:0}, i=1, mina=-2147480485, minb=3072, minc=-2147477413, N=2, p=1] [L61] 2 int i=1; VAL [A={1:0}, B={2:0}, C={3:0}, i=1, mina=-2147480485, minb=3072, minc=-2147477413, N=2, p=1] [L61] COND TRUE 2 i= C[i]) [L78] 3 i++ VAL [A={1:0}, B={2:0}, C={3:0}, i=2, i=1, mina=-2147480485, minb=3072, minc=-2147477413, N=2, p=2] [L73] COND FALSE 3 !(i < N) [L82] 3 return 0; [L48] COND TRUE 1 i= A[i]) [L52] EXPR 1 B[i] VAL [\result={0:0}, A={1:0}, B={2:0}, B[i]=-2147480064, C={3:0}, i=2, i=1, mina=-2147480485, minb=3072, minc=-2147477413, N=2, p=2] [L52] COND TRUE 1 minb >= B[i] [L53] EXPR 1 B[i] [L53] 1 minb = B[i] [L48] 1 i++ VAL [\result={0:0}, A={1:0}, B={2:0}, B[i]=9, C={3:0}, i=2, i=2, mina=-2147480485, minb=-2147480064, minc=-2147477413, N=2, p=2] [L48] COND FALSE 1 !(i