./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw --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 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f ............................................................................................................................................ 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_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw --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 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:26:21,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:26:21,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:26:22,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:26:22,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:26:22,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:26:22,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:26:22,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:26:22,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:26:22,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:26:22,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:26:22,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:26:22,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:26:22,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:26:22,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:26:22,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:26:22,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:26:22,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:26:22,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:26:22,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:26:22,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:26:22,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:26:22,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:26:22,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:26:22,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:26:22,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:26:22,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:26:22,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:26:22,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:26:22,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:26:22,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:26:22,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:26:22,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:26:22,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:26:22,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:26:22,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:26:22,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:26:22,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:26:22,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:26:22,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:26:22,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:26:22,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:26:22,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:26:22,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:26:22,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:26:22,148 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:26:22,148 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:26:22,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:26:22,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:26:22,149 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:26:22,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:26:22,156 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:26:22,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:26:22,157 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:26:22,157 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:26:22,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:26:22,158 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:26:22,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:26:22,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:26:22,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:26:22,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:26:22,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:26:22,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:26:22,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:26:22,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:26:22,160 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:26:22,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:26:22,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:26:22,161 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:26:22,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:26:22,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:26:22,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:26:22,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:26:22,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:26:22,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:26:22,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:26:22,165 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:26:22,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:26:22,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:26:22,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:26:22,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:26:22,166 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_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f [2021-10-20 06:26:22,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:26:22,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:26:22,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:26:22,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:26:22,511 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:26:22,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-20 06:26:22,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/a5b8265cf/437ab5f11b79401f96aae2fa0e91039f/FLAGb97b0b5ca [2021-10-20 06:26:23,036 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:26:23,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-20 06:26:23,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/a5b8265cf/437ab5f11b79401f96aae2fa0e91039f/FLAGb97b0b5ca [2021-10-20 06:26:23,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/a5b8265cf/437ab5f11b79401f96aae2fa0e91039f [2021-10-20 06:26:23,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:26:23,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:26:23,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:26:23,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:26:23,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:26:23,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:23" (1/1) ... [2021-10-20 06:26:23,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378acfd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:23, skipping insertion in model container [2021-10-20 06:26:23,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:23" (1/1) ... [2021-10-20 06:26:23,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:26:23,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:26:23,691 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_5edd33dd-3523-4138-ba35-9ee8c0076788/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-20 06:26:23,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:26:23,734 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) [2021-10-20 06:26:23,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b8141b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:23, skipping insertion in model container [2021-10-20 06:26:23,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:26:23,736 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 06:26:23,740 INFO L168 Benchmark]: Toolchain (without parser) took 323.76 ms. Allocated memory is still 121.6 MB. Free memory was 89.1 MB in the beginning and 97.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:26:23,742 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 40.8 MB in the beginning and 40.7 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:26:23,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.68 ms. Allocated memory is still 121.6 MB. Free memory was 88.8 MB in the beginning and 97.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:26:23,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 40.8 MB in the beginning and 40.7 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.68 ms. Allocated memory is still 121.6 MB. Free memory was 88.8 MB in the beginning and 97.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 135]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:26:26,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:26:26,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:26:26,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:26:26,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:26:26,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:26:26,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:26:26,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:26:26,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:26:26,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:26:26,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:26:26,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:26:26,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:26:26,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:26:26,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:26:26,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:26:26,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:26:26,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:26:26,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:26:26,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:26:26,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:26:26,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:26:26,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:26:26,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:26:26,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:26:26,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:26:26,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:26:26,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:26:26,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:26:26,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:26:26,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:26:26,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:26:26,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:26:26,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:26:26,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:26:26,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:26:26,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:26:26,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:26:26,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:26:26,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:26:26,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:26:26,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 06:26:26,268 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:26:26,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:26:26,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:26:26,270 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:26:26,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:26:26,270 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:26:26,271 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:26:26,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:26:26,271 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:26:26,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:26:26,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:26:26,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:26:26,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:26:26,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:26:26,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:26:26,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:26:26,275 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:26:26,276 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 06:26:26,276 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 06:26:26,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:26:26,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:26:26,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:26:26,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:26:26,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:26:26,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 06:26:26,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:26:26,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:26:26,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:26:26,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:26:26,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:26:26,279 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 06:26:26,279 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 06:26:26,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:26:26,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:26:26,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:26:26,280 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_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49414c74dbf06ca246a7542c5de0c759fab59a2ccdec09a8aeadf57b3c89976f [2021-10-20 06:26:26,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:26:26,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:26:26,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:26:26,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:26:26,694 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:26:26,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-20 06:26:26,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/ea9d7447a/db434f8808bc43e284683952f3bc23f7/FLAG65a5c033f [2021-10-20 06:26:27,306 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:26:27,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-10-20 06:26:27,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/ea9d7447a/db434f8808bc43e284683952f3bc23f7/FLAG65a5c033f [2021-10-20 06:26:27,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/data/ea9d7447a/db434f8808bc43e284683952f3bc23f7 [2021-10-20 06:26:27,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:26:27,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:26:27,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:26:27,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:26:27,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:26:27,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:27" (1/1) ... [2021-10-20 06:26:27,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537c2cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:27, skipping insertion in model container [2021-10-20 06:26:27,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:27" (1/1) ... [2021-10-20 06:26:27,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:26:27,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:26:27,925 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_5edd33dd-3523-4138-ba35-9ee8c0076788/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-20 06:26:27,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:26:27,982 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 06:26:27,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:26:28,032 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_5edd33dd-3523-4138-ba35-9ee8c0076788/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-20 06:26:28,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:26:28,042 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:26:28,068 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_5edd33dd-3523-4138-ba35-9ee8c0076788/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[3529,3542] [2021-10-20 06:26:28,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:26:28,089 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:26:28,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28 WrapperNode [2021-10-20 06:26:28,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:26:28,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:26:28,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:26:28,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:26:28,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:26:28,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:26:28,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:26:28,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:26:28,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:26:28,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:26:28,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:26:28,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:26:28,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (1/1) ... [2021-10-20 06:26:28,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:26:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:26:28,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:26:28,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:26:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 06:26:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:26:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-20 06:26:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-20 06:26:28,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-20 06:26:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-20 06:26:28,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-20 06:26:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-20 06:26:28,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-20 06:26:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-20 06:26:28,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-20 06:26:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-20 06:26:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-20 06:26:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 06:26:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:26:28,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:26:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:26:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-20 06:26:28,305 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-20 06:26:29,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:26:29,934 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-10-20 06:26:29,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:29 BoogieIcfgContainer [2021-10-20 06:26:29,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:26:29,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:26:29,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:26:29,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:26:29,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:26:27" (1/3) ... [2021-10-20 06:26:29,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d07f2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:26:29, skipping insertion in model container [2021-10-20 06:26:29,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:28" (2/3) ... [2021-10-20 06:26:29,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d07f2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:26:29, skipping insertion in model container [2021-10-20 06:26:29,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:29" (3/3) ... [2021-10-20 06:26:29,944 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2021-10-20 06:26:29,950 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-20 06:26:29,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:26:29,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:26:29,950 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-20 06:26:30,024 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,024 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,025 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,025 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,025 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,025 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,025 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,026 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,026 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,026 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,027 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,027 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,027 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,027 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,028 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,031 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,032 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,032 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,032 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,032 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,033 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,033 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,034 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,034 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,034 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,034 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,034 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,035 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,035 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,035 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,035 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,035 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,036 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,036 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,036 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,037 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,037 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,037 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,037 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,037 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,038 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,038 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,038 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,038 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,039 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,039 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,040 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,041 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,041 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,041 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,041 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,041 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,042 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,042 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,042 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,042 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,043 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,043 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,043 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,044 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,044 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,044 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,044 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,044 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,045 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,045 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,046 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,046 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,052 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,052 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,052 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,054 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,054 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,055 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,055 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,055 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,055 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,061 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,061 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,062 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,064 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,064 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,064 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,065 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,065 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,065 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,066 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,068 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,068 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,068 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,069 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,069 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,069 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,069 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,069 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,070 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,070 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,070 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,070 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,073 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,073 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,073 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,073 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,073 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,074 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,074 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:26:30,087 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-20 06:26:30,152 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:26:30,160 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:26:30,161 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-20 06:26:30,182 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-20 06:26:30,193 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 193 transitions, 418 flow [2021-10-20 06:26:30,196 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 193 transitions, 418 flow [2021-10-20 06:26:30,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 193 transitions, 418 flow [2021-10-20 06:26:30,293 INFO L129 PetriNetUnfolder]: 18/189 cut-off events. [2021-10-20 06:26:30,293 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-20 06:26:30,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 189 events. 18/189 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2021-10-20 06:26:30,301 INFO L116 LiptonReduction]: Number of co-enabled transitions 1224 [2021-10-20 06:26:57,055 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 171 DAG size of output: 170 [2021-10-20 06:26:58,599 INFO L131 LiptonReduction]: Checked pairs total: 2361 [2021-10-20 06:26:58,600 INFO L133 LiptonReduction]: Total number of compositions: 184 [2021-10-20 06:26:58,618 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 36 transitions, 104 flow [2021-10-20 06:26:58,667 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:26:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:26:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-20 06:26:58,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:26:58,691 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] [2021-10-20 06:26:58,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:26:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:26:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash -956661347, now seen corresponding path program 1 times [2021-10-20 06:26:58,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:26:58,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444809483] [2021-10-20 06:26:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:26:58,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:26:58,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:26:58,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:26:58,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 06:26:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:26:58,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:26:58,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:26:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:26:59,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:26:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:26:59,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:26:59,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444809483] [2021-10-20 06:26:59,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444809483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:26:59,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:26:59,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-20 06:26:59,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280071567] [2021-10-20 06:26:59,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:26:59,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:26:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:26:59,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:26:59,262 INFO L87 Difference]: Start difference. First operand has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 0 states have call successors, (0), 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 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:26:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:26:59,337 INFO L93 Difference]: Finished difference Result 331 states and 1301 transitions. [2021-10-20 06:26:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:26:59,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-20 06:26:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:26:59,366 INFO L225 Difference]: With dead ends: 331 [2021-10-20 06:26:59,366 INFO L226 Difference]: Without dead ends: 314 [2021-10-20 06:26:59,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:26:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-20 06:26:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 234. [2021-10-20 06:26:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.9141630901287554) internal successors, (912), 233 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:26:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 912 transitions. [2021-10-20 06:26:59,465 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 912 transitions. Word has length 23 [2021-10-20 06:26:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:26:59,466 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 912 transitions. [2021-10-20 06:26:59,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:26:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 912 transitions. [2021-10-20 06:26:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-20 06:26:59,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:26:59,477 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] [2021-10-20 06:26:59,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:26:59,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:26:59,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:26:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:26:59,689 INFO L82 PathProgramCache]: Analyzing trace with hash -617843621, now seen corresponding path program 1 times [2021-10-20 06:26:59,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:26:59,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808265293] [2021-10-20 06:26:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:26:59,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:26:59,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:26:59,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:26:59,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 06:26:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:26:59,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 06:26:59,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:00,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:00,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:00,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808265293] [2021-10-20 06:27:00,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808265293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:27:00,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:27:00,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-20 06:27:00,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036508627] [2021-10-20 06:27:00,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 06:27:00,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 06:27:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:27:00,238 INFO L87 Difference]: Start difference. First operand 234 states and 912 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:00,509 INFO L93 Difference]: Finished difference Result 448 states and 1606 transitions. [2021-10-20 06:27:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:27:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2021-10-20 06:27:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:00,516 INFO L225 Difference]: With dead ends: 448 [2021-10-20 06:27:00,516 INFO L226 Difference]: Without dead ends: 404 [2021-10-20 06:27:00,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:27:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-20 06:27:00,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 330. [2021-10-20 06:27:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.878419452887538) internal successors, (1276), 329 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1276 transitions. [2021-10-20 06:27:00,554 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1276 transitions. Word has length 25 [2021-10-20 06:27:00,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:00,554 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1276 transitions. [2021-10-20 06:27:00,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1276 transitions. [2021-10-20 06:27:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-20 06:27:00,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:00,557 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] [2021-10-20 06:27:00,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:00,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:27:00,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:00,769 INFO L82 PathProgramCache]: Analyzing trace with hash -438178697, now seen corresponding path program 1 times [2021-10-20 06:27:00,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:00,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274241168] [2021-10-20 06:27:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:00,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:00,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:00,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:00,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 06:27:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:00,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 06:27:00,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:01,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:01,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:01,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274241168] [2021-10-20 06:27:01,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274241168] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:01,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1031620496] [2021-10-20 06:27:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:01,212 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:27:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:27:01,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:27:01,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-20 06:27:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:01,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 06:27:01,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:01,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:01,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1031620496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:27:01,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-20 06:27:01,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [3, 3] total 8 [2021-10-20 06:27:01,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058474766] [2021-10-20 06:27:01,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:27:01,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:01,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:27:01,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:27:01,750 INFO L87 Difference]: Start difference. First operand 330 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:01,878 INFO L93 Difference]: Finished difference Result 630 states and 2237 transitions. [2021-10-20 06:27:01,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:27:01,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-20 06:27:01,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:01,886 INFO L225 Difference]: With dead ends: 630 [2021-10-20 06:27:01,886 INFO L226 Difference]: Without dead ends: 524 [2021-10-20 06:27:01,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-20 06:27:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-20 06:27:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 484. [2021-10-20 06:27:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.6832298136645965) internal successors, (1779), 483 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1779 transitions. [2021-10-20 06:27:01,910 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1779 transitions. Word has length 25 [2021-10-20 06:27:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:01,910 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1779 transitions. [2021-10-20 06:27:01,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1779 transitions. [2021-10-20 06:27:01,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-20 06:27:01,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:01,913 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] [2021-10-20 06:27:01,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:02,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:02,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:27:02,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:02,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:02,333 INFO L82 PathProgramCache]: Analyzing trace with hash 107778399, now seen corresponding path program 1 times [2021-10-20 06:27:02,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:02,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884489673] [2021-10-20 06:27:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:02,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:02,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:02,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 06:27:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:02,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-20 06:27:02,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:02,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:02,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:02,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884489673] [2021-10-20 06:27:02,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884489673] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:27:02,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:27:02,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-20 06:27:02,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967322337] [2021-10-20 06:27:02,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 06:27:02,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 06:27:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:27:02,781 INFO L87 Difference]: Start difference. First operand 484 states and 1779 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 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) [2021-10-20 06:27:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:02,908 INFO L93 Difference]: Finished difference Result 685 states and 2379 transitions. [2021-10-20 06:27:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:27:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 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 26 [2021-10-20 06:27:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:02,917 INFO L225 Difference]: With dead ends: 685 [2021-10-20 06:27:02,918 INFO L226 Difference]: Without dead ends: 638 [2021-10-20 06:27:02,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:27:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-20 06:27:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 514. [2021-10-20 06:27:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.682261208576998) internal successors, (1889), 513 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1889 transitions. [2021-10-20 06:27:02,943 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1889 transitions. Word has length 26 [2021-10-20 06:27:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:02,943 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1889 transitions. [2021-10-20 06:27:02,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 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) [2021-10-20 06:27:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1889 transitions. [2021-10-20 06:27:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-20 06:27:02,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:02,946 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] [2021-10-20 06:27:02,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:03,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:27:03,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash 797000722, now seen corresponding path program 1 times [2021-10-20 06:27:03,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:03,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960924618] [2021-10-20 06:27:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:03,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:03,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:03,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:03,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 06:27:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:03,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 06:27:03,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:03,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:03,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:03,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960924618] [2021-10-20 06:27:03,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960924618] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:03,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2035296209] [2021-10-20 06:27:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:03,603 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:27:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:27:03,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:27:03,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-20 06:27:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:03,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 06:27:03,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:04,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:04,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2035296209] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:04,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935368672] [2021-10-20 06:27:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:04,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:27:04,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:27:04,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:27:04,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-20 06:27:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 06:27:05,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:05,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:27:06,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935368672] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:06,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-20 06:27:06,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 6, 7, 6, 5] total 14 [2021-10-20 06:27:06,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67877174] [2021-10-20 06:27:06,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-20 06:27:06,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:06,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-20 06:27:06,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-10-20 06:27:06,011 INFO L87 Difference]: Start difference. First operand 514 states and 1889 transitions. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:06,840 INFO L93 Difference]: Finished difference Result 1730 states and 6491 transitions. [2021-10-20 06:27:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-20 06:27:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-20 06:27:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:06,860 INFO L225 Difference]: With dead ends: 1730 [2021-10-20 06:27:06,860 INFO L226 Difference]: Without dead ends: 1632 [2021-10-20 06:27:06,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 464.2ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-10-20 06:27:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-10-20 06:27:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 682. [2021-10-20 06:27:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 3.9676945668135097) internal successors, (2702), 681 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2702 transitions. [2021-10-20 06:27:06,903 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2702 transitions. Word has length 26 [2021-10-20 06:27:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:06,904 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 2702 transitions. [2021-10-20 06:27:06,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 14 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2702 transitions. [2021-10-20 06:27:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-20 06:27:06,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:06,907 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] [2021-10-20 06:27:06,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:07,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:07,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:07,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:27:07,524 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:07,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1205895199, now seen corresponding path program 1 times [2021-10-20 06:27:07,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:07,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124585282] [2021-10-20 06:27:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:07,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:07,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:07,526 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:07,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-20 06:27:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:07,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 06:27:07,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:08,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:08,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:08,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124585282] [2021-10-20 06:27:08,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124585282] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:27:08,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:27:08,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-20 06:27:08,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664866341] [2021-10-20 06:27:08,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 06:27:08,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 06:27:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:27:08,252 INFO L87 Difference]: Start difference. First operand 682 states and 2702 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:08,631 INFO L93 Difference]: Finished difference Result 960 states and 3432 transitions. [2021-10-20 06:27:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 06:27:08,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-20 06:27:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:08,643 INFO L225 Difference]: With dead ends: 960 [2021-10-20 06:27:08,643 INFO L226 Difference]: Without dead ends: 908 [2021-10-20 06:27:08,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-20 06:27:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-20 06:27:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 590. [2021-10-20 06:27:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.692699490662139) internal successors, (2175), 589 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 2175 transitions. [2021-10-20 06:27:08,679 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 2175 transitions. Word has length 27 [2021-10-20 06:27:08,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:08,679 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 2175 transitions. [2021-10-20 06:27:08,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 2175 transitions. [2021-10-20 06:27:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-20 06:27:08,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:08,684 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] [2021-10-20 06:27:08,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-20 06:27:08,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:27:08,897 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:08,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:08,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1534868317, now seen corresponding path program 2 times [2021-10-20 06:27:08,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:08,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786293277] [2021-10-20 06:27:08,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-20 06:27:08,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:08,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:08,900 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:08,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-20 06:27:09,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-20 06:27:09,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-20 06:27:09,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 06:27:09,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:09,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:09,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:09,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786293277] [2021-10-20 06:27:09,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786293277] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:09,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [680733410] [2021-10-20 06:27:09,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-20 06:27:09,869 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:27:09,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:27:09,872 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:27:09,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-20 06:27:10,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-20 06:27:10,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-20 06:27:10,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 06:27:10,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:10,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:11,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [680733410] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-20 06:27:11,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-20 06:27:11,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 4] total 12 [2021-10-20 06:27:11,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389838554] [2021-10-20 06:27:11,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:27:11,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:27:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-20 06:27:11,013 INFO L87 Difference]: Start difference. First operand 590 states and 2175 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:11,241 INFO L93 Difference]: Finished difference Result 728 states and 2497 transitions. [2021-10-20 06:27:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:27:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-20 06:27:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:11,255 INFO L225 Difference]: With dead ends: 728 [2021-10-20 06:27:11,256 INFO L226 Difference]: Without dead ends: 691 [2021-10-20 06:27:11,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 231.3ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-10-20 06:27:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-10-20 06:27:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 483. [2021-10-20 06:27:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 3.7261410788381744) internal successors, (1796), 482 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1796 transitions. [2021-10-20 06:27:11,280 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1796 transitions. Word has length 27 [2021-10-20 06:27:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:11,280 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 1796 transitions. [2021-10-20 06:27:11,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1796 transitions. [2021-10-20 06:27:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-20 06:27:11,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:11,283 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] [2021-10-20 06:27:11,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:11,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-20 06:27:11,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:27:11,687 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:11,687 INFO L82 PathProgramCache]: Analyzing trace with hash 30488815, now seen corresponding path program 1 times [2021-10-20 06:27:11,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:11,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995434093] [2021-10-20 06:27:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:11,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:11,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:11,689 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:11,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-20 06:27:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:12,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 06:27:12,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:12,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:12,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:12,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995434093] [2021-10-20 06:27:12,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995434093] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:12,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1236110257] [2021-10-20 06:27:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:12,562 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:27:12,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:27:12,564 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:27:12,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-20 06:27:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:13,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 06:27:13,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:13,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:27:13,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1236110257] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:13,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083693107] [2021-10-20 06:27:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:13,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:27:13,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:27:13,410 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:27:13,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-20 06:27:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:13,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:27:13,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:13,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-20 06:27:14,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083693107] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:14,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-20 06:27:14,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3, 4, 3, 3] total 12 [2021-10-20 06:27:14,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043287666] [2021-10-20 06:27:14,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-20 06:27:14,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-20 06:27:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-20 06:27:14,009 INFO L87 Difference]: Start difference. First operand 483 states and 1796 transitions. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:14,498 INFO L93 Difference]: Finished difference Result 1183 states and 4022 transitions. [2021-10-20 06:27:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-20 06:27:14,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-20 06:27:14,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:14,509 INFO L225 Difference]: With dead ends: 1183 [2021-10-20 06:27:14,509 INFO L226 Difference]: Without dead ends: 956 [2021-10-20 06:27:14,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 232.1ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-20 06:27:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-20 06:27:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 502. [2021-10-20 06:27:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 3.940119760479042) internal successors, (1974), 501 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1974 transitions. [2021-10-20 06:27:14,538 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1974 transitions. Word has length 27 [2021-10-20 06:27:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:14,539 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1974 transitions. [2021-10-20 06:27:14,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1974 transitions. [2021-10-20 06:27:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-20 06:27:14,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:14,541 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] [2021-10-20 06:27:14,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:14,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:14,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-20 06:27:15,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt [2021-10-20 06:27:15,159 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:15,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1549545435, now seen corresponding path program 1 times [2021-10-20 06:27:15,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:15,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111814710] [2021-10-20 06:27:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:15,161 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:15,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:15,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:15,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-20 06:27:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:15,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 06:27:15,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:15,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:16,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:16,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111814710] [2021-10-20 06:27:16,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111814710] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-20 06:27:16,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-20 06:27:16,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-10-20 06:27:16,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795571069] [2021-10-20 06:27:16,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:27:16,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:27:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:27:16,312 INFO L87 Difference]: Start difference. First operand 502 states and 1974 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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) [2021-10-20 06:27:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:16,805 INFO L93 Difference]: Finished difference Result 638 states and 2547 transitions. [2021-10-20 06:27:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:27:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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 29 [2021-10-20 06:27:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:16,815 INFO L225 Difference]: With dead ends: 638 [2021-10-20 06:27:16,815 INFO L226 Difference]: Without dead ends: 638 [2021-10-20 06:27:16,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 313.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-20 06:27:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-20 06:27:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 440. [2021-10-20 06:27:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.917995444191344) internal successors, (1720), 439 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1720 transitions. [2021-10-20 06:27:16,851 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1720 transitions. Word has length 29 [2021-10-20 06:27:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:16,851 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1720 transitions. [2021-10-20 06:27:16,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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) [2021-10-20 06:27:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1720 transitions. [2021-10-20 06:27:16,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-20 06:27:16,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:16,859 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] [2021-10-20 06:27:16,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:17,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:27:17,076 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:17,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1369880511, now seen corresponding path program 1 times [2021-10-20 06:27:17,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:17,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940760902] [2021-10-20 06:27:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:17,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:17,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:17,079 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:17,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-20 06:27:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-20 06:27:17,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:17,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:18,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:27:18,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940760902] [2021-10-20 06:27:18,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940760902] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:18,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1017356205] [2021-10-20 06:27:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:18,322 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:27:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:27:18,328 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:27:18,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-20 06:27:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:18,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 06:27:18,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:19,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:19,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1017356205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:19,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358428626] [2021-10-20 06:27:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:19,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:27:19,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:27:19,527 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:27:19,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-20 06:27:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:20,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 06:27:20,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:20,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:27:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 06:27:20,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358428626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:27:20,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-20 06:27:20,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-10-20 06:27:20,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642031779] [2021-10-20 06:27:20,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-20 06:27:20,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:27:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-20 06:27:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-20 06:27:20,481 INFO L87 Difference]: Start difference. First operand 440 states and 1720 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:20,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:27:20,816 INFO L93 Difference]: Finished difference Result 960 states and 3832 transitions. [2021-10-20 06:27:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 06:27:20,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-20 06:27:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:27:20,835 INFO L225 Difference]: With dead ends: 960 [2021-10-20 06:27:20,836 INFO L226 Difference]: Without dead ends: 960 [2021-10-20 06:27:20,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 381.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-20 06:27:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-10-20 06:27:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 560. [2021-10-20 06:27:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.9838998211091234) internal successors, (2227), 559 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 2227 transitions. [2021-10-20 06:27:20,881 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 2227 transitions. Word has length 29 [2021-10-20 06:27:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:27:20,881 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 2227 transitions. [2021-10-20 06:27:20,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:27:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 2227 transitions. [2021-10-20 06:27:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-20 06:27:20,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:27:20,884 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, 1, 1] [2021-10-20 06:27:20,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-10-20 06:27:21,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:21,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-20 06:27:21,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:27:21,492 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-20 06:27:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:27:21,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1030863103, now seen corresponding path program 1 times [2021-10-20 06:27:21,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:27:21,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721040288] [2021-10-20 06:27:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:27:21,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:27:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:27:21,494 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:27:21,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-20 06:27:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:27:22,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-20 06:27:22,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:27:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:27:22,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:27:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:27:22,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 87 [2021-10-20 06:27:22,938 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-20 06:27:22,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-20 06:30:45,585 WARN L207 SmtUtils]: Spent 3.30 m on a formula simplification. DAG size of input: 375 DAG size of output: 130 [2021-10-20 06:30:45,587 INFO L354 Elim1Store]: treesize reduction 2036, result has 18.2 percent of original size [2021-10-20 06:30:45,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 132 treesize of output 508 [2021-10-20 06:34:49,493 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-20 06:34:49,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-20 06:34:49,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:34:49,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721040288] [2021-10-20 06:34:49,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-20 06:34:49,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [277789062] [2021-10-20 06:34:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:34:49,498 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:34:49,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:34:49,499 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:34:49,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-20 06:34:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:34:51,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-20 06:34:51,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:34:51,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-20 06:34:51,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096770219] [2021-10-20 06:34:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:34:51,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:34:51,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:34:51,187 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:34:51,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-20 06:34:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:34:51,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-20 06:34:51,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:34:51,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-20 06:34:51,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:34:51,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-20 06:34:51,982 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-20 06:34:51,982 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-20 06:34:51,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:34:51,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-20 06:34:51,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-20 06:34:51,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-20 06:34:51,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-20 06:34:52,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-20 06:34:52,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-20 06:34:52,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-10-20 06:34:52,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5edd33dd-3523-4138-ba35-9ee8c0076788/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt [2021-10-20 06:34:52,593 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-20 06:34:52,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:34:52,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:34:52 BasicIcfg [2021-10-20 06:34:52,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:34:52,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:34:52,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:34:52,618 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:34:52,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:29" (3/4) ... [2021-10-20 06:34:52,622 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 06:34:52,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:34:52,623 INFO L168 Benchmark]: Toolchain (without parser) took 504955.81 ms. Allocated memory was 60.8 MB in the beginning and 115.3 MB in the end (delta: 54.5 MB). Free memory was 40.5 MB in the beginning and 57.2 MB in the end (delta: -16.7 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:34:52,623 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 41.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:34:52,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.78 ms. Allocated memory is still 60.8 MB. Free memory was 40.2 MB in the beginning and 39.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:34:52,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.32 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 37.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:34:52,624 INFO L168 Benchmark]: Boogie Preprocessor took 60.74 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 35.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:34:52,625 INFO L168 Benchmark]: RCFGBuilder took 1731.43 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 35.0 MB in the beginning and 42.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:34:52,625 INFO L168 Benchmark]: TraceAbstraction took 502679.59 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 42.3 MB in the beginning and 57.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:34:52,626 INFO L168 Benchmark]: Witness Printer took 3.97 ms. Allocated memory is still 115.3 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:34:52,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 41.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.78 ms. Allocated memory is still 60.8 MB. Free memory was 40.2 MB in the beginning and 39.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.32 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 37.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.74 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 35.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1731.43 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 35.0 MB in the beginning and 42.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 502679.59 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 42.3 MB in the beginning and 57.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.97 ms. Allocated memory is still 115.3 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28404.0ms, 188 PlacesBefore, 43 PlacesAfterwards, 193 TransitionsBefore, 36 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 7 FixpointIterations, 118 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 184 TotalNumberOfCompositions, 2361 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1864, positive: 1784, positive conditional: 0, positive unconditional: 1784, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 882, positive: 862, positive conditional: 0, positive unconditional: 862, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 882, positive: 860, positive conditional: 0, positive unconditional: 860, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 921, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 918, negative conditional: 0, negative unconditional: 918, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1864, positive: 922, positive conditional: 0, positive unconditional: 922, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 882, unknown conditional: 0, unknown unconditional: 882] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 126]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, i, j, n1, n2, N, C, total; [L100] 0 pthread_t t1, t2, t3, t4; [L102] 0 C = __VERIFIER_nondet_int() [L103] 0 N = __VERIFIER_nondet_int() [L104] 0 n1 = __VERIFIER_nondet_int() [L105] 0 n2 = __VERIFIER_nondet_int() [L106] 0 q1_front = __VERIFIER_nondet_int() [L107] 0 q1_back = q1_front [L108] 0 q2_front = __VERIFIER_nondet_int() [L109] 0 q2_back = q2_front [L38] COND TRUE 0 !cond [L38] COND TRUE 0 !cond [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND FALSE 0 !(i < size) [L139] 0 return arr; [L110] 0 q1 = create_fresh_int_array(n1) [L38] COND TRUE 0 !cond [L38] COND FALSE 0 !(!cond) [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND FALSE 0 !(i < size) [L139] 0 return arr; [L111] 0 q2 = create_fresh_int_array(n2) [L38] COND FALSE 0 !(!cond) [L116] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L48] COND TRUE 1 i < N [L38] COND TRUE 1 !cond [L51] 1 q1[q1_back] [L38] COND TRUE 1 !cond [L38] COND TRUE 1 !cond [L53] 1 q1_back++ [L54] 1 i++ [L58] 1 return 0; [L117] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L62] COND TRUE 2 j < N [L38] COND TRUE 2 !cond [L65] 2 q2[q2_back] [L38] COND TRUE 2 !cond [L38] COND TRUE 2 !cond [L67] 2 q2_back++ [L68] 2 j++ [L72] 2 return 0; [L118] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L119] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) [L76] COND TRUE 3 i < N || q1_front < q1_back [L38] COND TRUE 3 !cond [L79] EXPR 3 q1[q1_front] [L38] COND FALSE 3 !(!cond) [L38] COND TRUE 3 !cond [L145] 3 return a + b; [L79] 3 total = plus(total, q1[q1_front]) [L80] 3 q1_front++ [L120] 0 \read(t1) [L120] FCALL, JOIN 1 pthread_join(t1, 0) [L121] 0 \read(t2) [L121] FCALL, JOIN 2 pthread_join(t2, 0) [L122] 0 \read(t3) [L76] COND FALSE 3 !(i < N || q1_front < q1_back) [L84] 3 return 0; [L122] FCALL, JOIN 3 pthread_join(t3, 0) [L123] 0 \read(t4) [L88] COND TRUE 4 j < N || q2_front < q2_back [L38] COND TRUE 4 !cond [L91] EXPR 4 q2[q2_front] [L38] COND TRUE 4 !cond [L38] COND FALSE 4 !(!cond) [L145] 4 return a + b; [L91] 4 total = plus(total, q2[q2_front]) [L92] 4 q2_front++ [L88] COND FALSE 4 !(j < N || q2_front < q2_back) [L96] 4 return 0; [L123] FCALL, JOIN 4 pthread_join(t4, 0) [L38] COND FALSE 0 !(!cond) [L126] 0 reach_error() - UnprovableResult [Line: 119]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 118]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 117]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 200 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 502441.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 57.2ms, AutomataDifference: 3523.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28508.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 380 SDtfs, 1088 SDslu, 1181 SDs, 0 SdLazy, 593 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2354.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 939 GetRequests, 849 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1931.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=682occurred in iteration=5, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 377.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2846 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 396.0ms SsaConstructionTime, 1826.7ms SatisfiabilityAnalysisTime, 8555.3ms InterpolantComputationTime, 480 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 924 ConstructedInterpolants, 10 QuantifiedInterpolants, 5090 SizeOfPredicates, 95 NumberOfNonLiveVariables, 2699 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 36 InterpolantComputations, 12 PerfectInterpolantSequences, 70/98 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...