./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG --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 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c ............................................................................................................................................ 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_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG --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 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:06:02,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:06:02,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:06:02,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:06:02,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:06:02,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:06:02,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:06:02,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:06:02,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:06:02,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:06:02,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:06:02,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:06:02,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:06:02,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:06:02,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:06:02,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:06:02,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:06:02,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:06:02,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:06:02,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:06:02,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:06:02,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:06:02,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:06:02,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:06:02,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:06:02,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:06:02,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:06:02,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:06:02,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:06:02,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:06:02,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:06:02,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:06:02,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:06:02,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:06:02,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:06:02,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:06:02,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:06:02,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:06:02,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:06:02,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:06:02,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:06:02,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:06:02,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:06:02,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:06:02,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:06:02,356 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:06:02,356 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:06:02,356 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:06:02,356 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:06:02,357 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:06:02,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:06:02,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:06:02,367 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:06:02,367 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:06:02,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:06:02,368 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:06:02,368 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:06:02,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:06:02,369 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:06:02,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:06:02,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:06:02,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:06:02,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:06:02,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:06:02,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:06:02,371 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:06:02,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:06:02,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:06:02,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:06:02,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:06:02,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:06:02,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:06:02,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:02,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:06:02,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:06:02,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:06:02,377 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:06:02,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:06:02,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:06:02,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:06:02,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:06:02,378 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_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c [2021-10-29 05:06:02,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:06:02,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:06:02,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:06:02,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:06:02,774 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:06:02,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-10-29 05:06:02,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/c56589986/c7a221bdc46c4a24aa9ce0fad97b3c61/FLAG2502fe3e6 [2021-10-29 05:06:03,550 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:06:03,566 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-10-29 05:06:03,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/c56589986/c7a221bdc46c4a24aa9ce0fad97b3c61/FLAG2502fe3e6 [2021-10-29 05:06:03,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/c56589986/c7a221bdc46c4a24aa9ce0fad97b3c61 [2021-10-29 05:06:03,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:06:03,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:06:03,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:03,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:06:03,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:06:03,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:03" (1/1) ... [2021-10-29 05:06:03,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712a4359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:03, skipping insertion in model container [2021-10-29 05:06:03,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:03" (1/1) ... [2021-10-29 05:06:03,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:06:03,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:06:04,267 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_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-10-29 05:06:04,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:04,285 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) [2021-10-29 05:06:04,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74f914c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:04, skipping insertion in model container [2021-10-29 05:06:04,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:04,287 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:06:04,289 INFO L168 Benchmark]: Toolchain (without parser) took 466.45 ms. Allocated memory is still 132.1 MB. Free memory was 92.8 MB in the beginning and 102.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:04,290 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 132.1 MB. Free memory was 105.7 MB in the beginning and 105.7 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:06:04,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.29 ms. Allocated memory is still 132.1 MB. Free memory was 92.6 MB in the beginning and 102.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:04,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 132.1 MB. Free memory was 105.7 MB in the beginning and 105.7 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.29 ms. Allocated memory is still 132.1 MB. Free memory was 92.6 MB in the beginning and 102.2 MB in the end (delta: -9.6 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: 78]: 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-b2eff8b [2021-10-29 05:06:07,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:06:07,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:06:07,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:06:07,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:06:07,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:06:07,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:06:07,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:06:07,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:06:07,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:06:07,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:06:07,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:06:07,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:06:07,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:06:07,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:06:07,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:06:07,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:06:07,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:06:07,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:06:07,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:06:07,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:06:07,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:06:07,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:06:07,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:06:07,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:06:07,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:06:07,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:06:07,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:06:07,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:06:07,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:06:07,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:06:07,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:06:07,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:06:07,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:06:07,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:06:07,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:06:07,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:06:07,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:06:07,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:06:07,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:06:07,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:06:07,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:06:07,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:06:07,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:06:07,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:06:07,268 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:06:07,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:06:07,268 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:06:07,268 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:06:07,268 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:06:07,270 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:06:07,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:06:07,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:06:07,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:06:07,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:06:07,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:06:07,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:06:07,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:06:07,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:06:07,274 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:06:07,275 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:06:07,275 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:06:07,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:06:07,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:06:07,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:06:07,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:06:07,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:06:07,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:06:07,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:07,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:06:07,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:06:07,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:06:07,278 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:06:07,278 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:06:07,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:06:07,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:06:07,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:06:07,279 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_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c [2021-10-29 05:06:07,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:06:07,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:06:07,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:06:07,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:06:07,794 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:06:07,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-10-29 05:06:07,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/eddd74071/fdca104ce86c47a5b2b97fc7373aec71/FLAGcc1a75563 [2021-10-29 05:06:08,599 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:06:08,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-10-29 05:06:08,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/eddd74071/fdca104ce86c47a5b2b97fc7373aec71/FLAGcc1a75563 [2021-10-29 05:06:08,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/data/eddd74071/fdca104ce86c47a5b2b97fc7373aec71 [2021-10-29 05:06:08,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:06:08,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:06:08,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:08,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:06:08,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:06:08,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:08" (1/1) ... [2021-10-29 05:06:08,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3801a96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:08, skipping insertion in model container [2021-10-29 05:06:08,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:08" (1/1) ... [2021-10-29 05:06:08,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:06:08,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:06:09,382 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_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-10-29 05:06:09,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:09,451 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:06:09,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:06:09,618 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_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-10-29 05:06:09,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:09,638 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:06:09,705 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_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-10-29 05:06:09,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:09,730 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:06:09,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09 WrapperNode [2021-10-29 05:06:09,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:09,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:09,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:06:09,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:06:09,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:09,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:06:09,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:06:09,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:06:09,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:06:09,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:06:09,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:06:09,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:06:09,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (1/1) ... [2021-10-29 05:06:09,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:09,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:06:09,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:06:09,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:06:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:06:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:06:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:06:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:06:12,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:06:12,806 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-10-29 05:06:12,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:12 BoogieIcfgContainer [2021-10-29 05:06:12,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:06:12,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:06:12,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:06:12,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:06:12,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:06:08" (1/3) ... [2021-10-29 05:06:12,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7389dabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:12, skipping insertion in model container [2021-10-29 05:06:12,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:09" (2/3) ... [2021-10-29 05:06:12,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7389dabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:12, skipping insertion in model container [2021-10-29 05:06:12,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:12" (3/3) ... [2021-10-29 05:06:12,819 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2021-10-29 05:06:12,825 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:06:12,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:06:12,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:06:12,912 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 [2021-10-29 05:06:12,912 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:06:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:06:12,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:12,959 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:12,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1847621448, now seen corresponding path program 1 times [2021-10-29 05:06:12,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:12,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55420915] [2021-10-29 05:06:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:12,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:12,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:12,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:12,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:06:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:13,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:06:13,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:13,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:13,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:13,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55420915] [2021-10-29 05:06:13,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55420915] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:13,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:13,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:06:13,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240711522] [2021-10-29 05:06:13,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:06:13,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:13,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:06:13,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:06:13,491 INFO L87 Difference]: Start difference. First operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:13,524 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2021-10-29 05:06:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:06:13,526 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:06:13,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:13,539 INFO L225 Difference]: With dead ends: 168 [2021-10-29 05:06:13,539 INFO L226 Difference]: Without dead ends: 83 [2021-10-29 05:06:13,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:06:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-29 05:06:13,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-29 05:06:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.4625) internal successors, (117), 82 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-10-29 05:06:13,593 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2021-10-29 05:06:13,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:13,594 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-10-29 05:06:13,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2021-10-29 05:06:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:06:13,596 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:13,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:13,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:13,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:13,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 800864551, now seen corresponding path program 1 times [2021-10-29 05:06:13,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:13,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740007216] [2021-10-29 05:06:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:13,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:13,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:13,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:06:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:14,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:06:14,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:14,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:14,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:14,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740007216] [2021-10-29 05:06:14,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740007216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:14,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:14,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:06:14,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873329245] [2021-10-29 05:06:14,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:06:14,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:06:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:06:14,381 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:14,412 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2021-10-29 05:06:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:06:14,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 05:06:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:14,416 INFO L225 Difference]: With dead ends: 83 [2021-10-29 05:06:14,416 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 05:06:14,418 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:06:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 05:06:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-29 05:06:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2021-10-29 05:06:14,433 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2021-10-29 05:06:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:14,434 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2021-10-29 05:06:14,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-10-29 05:06:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:06:14,439 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:14,445 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:14,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:14,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:14,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:14,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2126819203, now seen corresponding path program 1 times [2021-10-29 05:06:14,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:14,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4635415] [2021-10-29 05:06:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:14,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:14,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:14,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:06:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:14,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:06:14,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:15,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:15,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:15,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4635415] [2021-10-29 05:06:15,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4635415] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:15,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:15,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 05:06:15,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866382906] [2021-10-29 05:06:15,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:06:15,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:06:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:06:15,171 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2021-10-29 05:06:15,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:15,195 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2021-10-29 05:06:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:06:15,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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 22 [2021-10-29 05:06:15,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:15,198 INFO L225 Difference]: With dead ends: 68 [2021-10-29 05:06:15,198 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 05:06:15,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:06:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 05:06:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-29 05:06:15,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2021-10-29 05:06:15,206 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2021-10-29 05:06:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:15,206 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2021-10-29 05:06:15,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2021-10-29 05:06:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2021-10-29 05:06:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:06:15,208 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:15,208 INFO L513 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] [2021-10-29 05:06:15,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:15,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:15,424 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:15,425 INFO L85 PathProgramCache]: Analyzing trace with hash -306622024, now seen corresponding path program 1 times [2021-10-29 05:06:15,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:15,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011928681] [2021-10-29 05:06:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:15,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:15,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:15,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:15,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:06:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:15,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:06:15,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:15,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:15,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:15,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011928681] [2021-10-29 05:06:15,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011928681] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:15,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:15,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:06:15,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800658769] [2021-10-29 05:06:15,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:06:15,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:06:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:06:15,830 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-10-29 05:06:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:15,903 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-10-29 05:06:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:06:15,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2021-10-29 05:06:15,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:15,906 INFO L225 Difference]: With dead ends: 89 [2021-10-29 05:06:15,906 INFO L226 Difference]: Without dead ends: 58 [2021-10-29 05:06:15,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:06:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-29 05:06:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-29 05:06:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 55 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2021-10-29 05:06:15,923 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2021-10-29 05:06:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:15,924 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2021-10-29 05:06:15,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-10-29 05:06:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2021-10-29 05:06:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-29 05:06:15,927 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:15,927 INFO L513 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] [2021-10-29 05:06:15,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:16,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:16,143 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1880803796, now seen corresponding path program 1 times [2021-10-29 05:06:16,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:16,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427992609] [2021-10-29 05:06:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:16,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:16,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:16,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:06:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:16,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:06:16,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:16,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:16,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:16,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427992609] [2021-10-29 05:06:16,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427992609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:16,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:16,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:06:16,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137975898] [2021-10-29 05:06:16,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:06:16,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:06:16,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:06:16,709 INFO L87 Difference]: Start difference. First operand 56 states and 78 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) [2021-10-29 05:06:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:16,843 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2021-10-29 05:06:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:06:16,844 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 [2021-10-29 05:06:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:16,847 INFO L225 Difference]: With dead ends: 266 [2021-10-29 05:06:16,847 INFO L226 Difference]: Without dead ends: 216 [2021-10-29 05:06:16,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:06:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-29 05:06:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 100. [2021-10-29 05:06:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:16,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2021-10-29 05:06:16,870 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 29 [2021-10-29 05:06:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:16,871 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2021-10-29 05:06:16,871 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) [2021-10-29 05:06:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2021-10-29 05:06:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 05:06:16,873 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:16,873 INFO L513 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] [2021-10-29 05:06:16,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:17,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:17,095 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash 634718134, now seen corresponding path program 1 times [2021-10-29 05:06:17,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:17,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953421886] [2021-10-29 05:06:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:17,097 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:17,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:17,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:17,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:06:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:17,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:06:17,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:17,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:17,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:17,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953421886] [2021-10-29 05:06:17,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953421886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:17,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:17,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:06:17,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593741613] [2021-10-29 05:06:17,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:06:17,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:06:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:06:17,650 INFO L87 Difference]: Start difference. First operand 100 states and 139 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:17,829 INFO L93 Difference]: Finished difference Result 280 states and 394 transitions. [2021-10-29 05:06:17,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:06:17,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-10-29 05:06:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:17,833 INFO L225 Difference]: With dead ends: 280 [2021-10-29 05:06:17,833 INFO L226 Difference]: Without dead ends: 278 [2021-10-29 05:06:17,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:06:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-29 05:06:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-10-29 05:06:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.393939393939394) internal successors, (138), 99 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2021-10-29 05:06:17,869 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 30 [2021-10-29 05:06:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:17,870 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2021-10-29 05:06:17,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2021-10-29 05:06:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:06:17,872 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:17,872 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:17,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-29 05:06:18,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:18,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 719357973, now seen corresponding path program 1 times [2021-10-29 05:06:18,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:18,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214133412] [2021-10-29 05:06:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:18,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:18,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:18,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:18,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:06:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:18,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:06:18,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:18,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:18,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:18,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214133412] [2021-10-29 05:06:18,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214133412] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:18,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:18,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 05:06:18,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136965791] [2021-10-29 05:06:18,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:06:18,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:06:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:06:18,623 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:18,705 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2021-10-29 05:06:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:06:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-29 05:06:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:18,708 INFO L225 Difference]: With dead ends: 270 [2021-10-29 05:06:18,708 INFO L226 Difference]: Without dead ends: 176 [2021-10-29 05:06:18,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:06:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-29 05:06:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2021-10-29 05:06:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 105 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2021-10-29 05:06:18,727 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 33 [2021-10-29 05:06:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:18,728 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2021-10-29 05:06:18,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2021-10-29 05:06:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:06:18,730 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:18,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:18,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:18,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:18,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:18,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash 132551959, now seen corresponding path program 1 times [2021-10-29 05:06:18,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:18,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057927945] [2021-10-29 05:06:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:18,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:18,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:18,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:18,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:06:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:19,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:06:19,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:19,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:19,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:19,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057927945] [2021-10-29 05:06:19,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057927945] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:19,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:19,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:06:19,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515358138] [2021-10-29 05:06:19,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:06:19,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:06:19,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:06:19,448 INFO L87 Difference]: Start difference. First operand 106 states and 144 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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) [2021-10-29 05:06:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:19,514 INFO L93 Difference]: Finished difference Result 288 states and 390 transitions. [2021-10-29 05:06:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:06:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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 33 [2021-10-29 05:06:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:19,517 INFO L225 Difference]: With dead ends: 288 [2021-10-29 05:06:19,517 INFO L226 Difference]: Without dead ends: 188 [2021-10-29 05:06:19,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:06:19,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-29 05:06:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 110. [2021-10-29 05:06:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3577981651376148) internal successors, (148), 109 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2021-10-29 05:06:19,536 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 33 [2021-10-29 05:06:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:19,537 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2021-10-29 05:06:19,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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) [2021-10-29 05:06:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2021-10-29 05:06:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:06:19,539 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:19,539 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:19,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:19,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:19,755 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1147311719, now seen corresponding path program 1 times [2021-10-29 05:06:19,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:19,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167188103] [2021-10-29 05:06:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:19,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:19,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:19,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:19,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:06:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:20,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:06:20,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:20,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:20,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:20,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167188103] [2021-10-29 05:06:20,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167188103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:20,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:20,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 05:06:20,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666459924] [2021-10-29 05:06:20,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:06:20,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:06:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:06:20,336 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:20,404 INFO L93 Difference]: Finished difference Result 346 states and 468 transitions. [2021-10-29 05:06:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:06:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 33 [2021-10-29 05:06:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:20,407 INFO L225 Difference]: With dead ends: 346 [2021-10-29 05:06:20,407 INFO L226 Difference]: Without dead ends: 242 [2021-10-29 05:06:20,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:06:20,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-29 05:06:20,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 192. [2021-10-29 05:06:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3455497382198953) internal successors, (257), 191 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2021-10-29 05:06:20,449 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 257 transitions. Word has length 33 [2021-10-29 05:06:20,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:20,449 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-10-29 05:06:20,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 257 transitions. [2021-10-29 05:06:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 05:06:20,456 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:20,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:20,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:20,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:20,672 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:20,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash 9984219, now seen corresponding path program 1 times [2021-10-29 05:06:20,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:20,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296641723] [2021-10-29 05:06:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:20,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:20,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:20,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:20,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:06:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:21,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:06:21,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:21,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:21,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:21,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296641723] [2021-10-29 05:06:21,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296641723] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:21,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:21,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-29 05:06:21,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803905542] [2021-10-29 05:06:21,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:06:21,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:06:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:06:21,393 INFO L87 Difference]: Start difference. First operand 192 states and 257 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:24,536 INFO L93 Difference]: Finished difference Result 788 states and 1036 transitions. [2021-10-29 05:06:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 05:06:24,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 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 34 [2021-10-29 05:06:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:24,545 INFO L225 Difference]: With dead ends: 788 [2021-10-29 05:06:24,545 INFO L226 Difference]: Without dead ends: 602 [2021-10-29 05:06:24,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:06:24,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-29 05:06:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 192. [2021-10-29 05:06:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3193717277486912) internal successors, (252), 191 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2021-10-29 05:06:24,590 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 34 [2021-10-29 05:06:24,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:24,591 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2021-10-29 05:06:24,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:06:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2021-10-29 05:06:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-29 05:06:24,594 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:24,594 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:24,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:24,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:24,811 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:06:24,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1795003067, now seen corresponding path program 1 times [2021-10-29 05:06:24,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:24,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850678046] [2021-10-29 05:06:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:24,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:24,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:24,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:24,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:06:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:06:26,539 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:06:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:06:28,110 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:06:28,110 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:06:28,112 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:28,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:28,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:28,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:28,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:28,331 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:28,336 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:06:28,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:06:28 BoogieIcfgContainer [2021-10-29 05:06:28,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:06:28,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:06:28,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:06:28,536 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:06:28,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:12" (3/4) ... [2021-10-29 05:06:28,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:06:28,661 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:06:28,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:06:28,663 INFO L168 Benchmark]: Toolchain (without parser) took 19776.34 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 48.8 MB in the beginning and 62.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:28,663 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:06:28,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 844.21 ms. Allocated memory is still 83.9 MB. Free memory was 48.6 MB in the beginning and 56.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:28,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.79 ms. Allocated memory is still 83.9 MB. Free memory was 56.4 MB in the beginning and 53.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:28,665 INFO L168 Benchmark]: Boogie Preprocessor took 82.52 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 50.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:28,666 INFO L168 Benchmark]: RCFGBuilder took 2894.07 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 50.8 MB in the beginning and 88.6 MB in the end (delta: -37.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:28,666 INFO L168 Benchmark]: TraceAbstraction took 15723.63 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 82.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 59.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:28,667 INFO L168 Benchmark]: Witness Printer took 126.23 ms. Allocated memory is still 115.3 MB. Free memory was 82.0 MB in the beginning and 62.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:28,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 844.21 ms. Allocated memory is still 83.9 MB. Free memory was 48.6 MB in the beginning and 56.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.79 ms. Allocated memory is still 83.9 MB. Free memory was 56.4 MB in the beginning and 53.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.52 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 50.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2894.07 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 50.8 MB in the beginning and 88.6 MB in the end (delta: -37.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15723.63 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 82.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 59.1 MB. Max. memory is 16.1 GB. * Witness Printer took 126.23 ms. Allocated memory is still 115.3 MB. Free memory was 82.0 MB in the beginning and 62.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 897]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int waterLevel = 1; [L491] int methaneLevelCritical = 0; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L759] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L835] int retValue_acc ; [L836] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L884] int retValue_acc ; [L887] retValue_acc = 1 [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] tmp = valid_product() [L844] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L438] tmp = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L508] COND TRUE waterLevel < 2 [L509] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L603] COND TRUE \read(systemActive) [L625] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L628] COND TRUE ! pumpRunning [L740] int retValue_acc ; [L741] int tmp ; [L742] int tmp___0 ; [L570] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] COND FALSE !(waterLevel < 2) [L577] retValue_acc = 0 [L578] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] tmp = isHighWaterSensorDry() [L748] COND FALSE !(\read(tmp)) [L751] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L753] retValue_acc = tmp___0 [L754] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L630] tmp = isHighWaterLevel() [L632] COND TRUE \read(tmp) [L659] int tmp ; [L684] int retValue_acc ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L688] retValue_acc = isMethaneLevelCritical() [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L663] tmp = isMethaneAlarm() [L665] COND FALSE !(\read(tmp)) [L653] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L903] int tmp ; [L904] int tmp___0 ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp = isMethaneLevelCritical() [L910] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L520] COND FALSE !(\read(methaneLevelCritical)) [L523] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L596] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L496] COND TRUE waterLevel > 0 [L497] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L603] COND TRUE \read(systemActive) [L625] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L628] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L903] int tmp ; [L904] int tmp___0 ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp = isMethaneLevelCritical() [L910] COND TRUE \read(tmp) [L695] int retValue_acc ; [L698] retValue_acc = pumpRunning [L699] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L912] tmp___0 = isPumpRunning() [L914] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L897] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 897]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 897]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 15.4s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 801 SDtfs, 1130 SDslu, 1904 SDs, 0 SdLazy, 231 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 549 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=9, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 904 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 927 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2056 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:06:28,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c202c7c8-d8c0-4592-8e78-1c501c6b7be0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...