./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI --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 08266259dc0ecf0b11540043fa73fc4406b9f127 ............................................................................................................................................ 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_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI --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 08266259dc0ecf0b11540043fa73fc4406b9f127 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 02:31:33,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:33,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:33,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:33,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:33,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:33,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:33,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:33,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:33,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:33,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:33,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:33,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:33,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:33,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:33,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:33,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:33,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:33,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:33,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:33,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:33,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:33,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:33,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:33,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:33,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:33,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:33,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:33,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:33,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:33,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:33,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:33,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:33,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:33,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:33,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:33,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:33,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:33,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:33,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:33,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:33,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:33,175 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:33,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:33,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:33,178 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:33,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:33,178 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:33,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:33,179 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:33,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:33,185 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:33,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:33,187 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:33,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:33,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:33,188 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:33,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:33,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:33,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:33,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:33,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:33,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:33,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:33,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:33,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:33,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:33,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:33,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:33,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:33,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:33,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:33,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:33,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:33,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:33,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:33,196 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:33,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:33,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:33,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:33,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:33,197 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_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08266259dc0ecf0b11540043fa73fc4406b9f127 [2021-10-11 02:31:33,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:33,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:33,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:33,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:33,498 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:33,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-10-11 02:31:33,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/ea1a498cb/70381236773e49568eb24054ab58a5b9/FLAG0cc917974 [2021-10-11 02:31:34,063 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:34,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-10-11 02:31:34,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/ea1a498cb/70381236773e49568eb24054ab58a5b9/FLAG0cc917974 [2021-10-11 02:31:34,423 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/ea1a498cb/70381236773e49568eb24054ab58a5b9 [2021-10-11 02:31:34,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:34,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:34,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:34,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:34,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:34,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:34" (1/1) ... [2021-10-11 02:31:34,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8cf91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:34, skipping insertion in model container [2021-10-11 02:31:34,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:34" (1/1) ... [2021-10-11 02:31:34,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:34,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:34,733 WARN L226 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_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c[3676,3689] [2021-10-11 02:31:34,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:34,907 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) [2021-10-11 02:31:34,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6749fcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:34, skipping insertion in model container [2021-10-11 02:31:34,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:34,910 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:31:34,912 INFO L168 Benchmark]: Toolchain (without parser) took 483.93 ms. Allocated memory is still 119.5 MB. Free memory was 78.9 MB in the beginning and 92.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:34,914 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 96.0 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:34,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.95 ms. Allocated memory is still 119.5 MB. Free memory was 78.7 MB in the beginning and 92.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:34,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 96.0 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 477.95 ms. Allocated memory is still 119.5 MB. Free memory was 78.7 MB in the beginning and 92.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 246]: 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 0.2.0-7b2dab5 [2021-10-11 02:31:37,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:37,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:37,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:37,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:37,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:37,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:37,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:37,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:37,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:37,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:37,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:37,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:37,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:37,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:37,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:37,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:37,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:37,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:37,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:37,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:37,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:37,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:37,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:37,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:37,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:37,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:37,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:37,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:37,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:37,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:37,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:37,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:37,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:37,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:37,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:37,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:37,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:37,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:37,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:37,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:37,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:31:37,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:37,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:37,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:37,404 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:37,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:37,405 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:37,405 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:37,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:37,405 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:37,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:37,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:37,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:37,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:37,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:37,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:37,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:37,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:37,410 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:31:37,410 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:31:37,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:37,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:37,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:37,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:37,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:37,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:31:37,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:37,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:37,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:37,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:37,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:37,413 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:31:37,413 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:31:37,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:37,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:37,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:37,414 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_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08266259dc0ecf0b11540043fa73fc4406b9f127 [2021-10-11 02:31:37,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:37,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:37,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:37,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:37,861 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:37,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-10-11 02:31:37,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/782266062/34ef2d8883b14053b77d640942017fd1/FLAG1c9b26be7 [2021-10-11 02:31:38,504 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:38,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-10-11 02:31:38,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/782266062/34ef2d8883b14053b77d640942017fd1/FLAG1c9b26be7 [2021-10-11 02:31:38,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/data/782266062/34ef2d8883b14053b77d640942017fd1 [2021-10-11 02:31:38,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:38,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:38,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:38,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:38,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:38,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:38" (1/1) ... [2021-10-11 02:31:38,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1224c7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:38, skipping insertion in model container [2021-10-11 02:31:38,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:38" (1/1) ... [2021-10-11 02:31:38,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:38,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:39,100 WARN L226 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_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c[3676,3689] [2021-10-11 02:31:39,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:39,268 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:31:39,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:39,294 WARN L226 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_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c[3676,3689] [2021-10-11 02:31:39,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:39,364 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:39,408 WARN L226 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_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c[3676,3689] [2021-10-11 02:31:39,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:39,536 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:39,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39 WrapperNode [2021-10-11 02:31:39,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:39,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:39,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:39,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:39,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:39,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:39,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:39,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:39,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... [2021-10-11 02:31:39,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:39,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:39,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:39,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:39,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:39,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:39,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:31:39,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:39,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:42,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:42,318 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-10-11 02:31:42,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:42 BoogieIcfgContainer [2021-10-11 02:31:42,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:42,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:42,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:42,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:38" (1/3) ... [2021-10-11 02:31:42,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453ae004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:42, skipping insertion in model container [2021-10-11 02:31:42,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:39" (2/3) ... [2021-10-11 02:31:42,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453ae004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:42, skipping insertion in model container [2021-10-11 02:31:42,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:42" (3/3) ... [2021-10-11 02:31:42,328 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2021-10-11 02:31:42,342 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:42,346 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:31:42,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:31:42,381 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:42,381 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:42,381 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:42,382 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:42,382 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:42,382 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:42,382 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:42,382 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2021-10-11 02:31:42,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:31:42,408 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:42,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:42,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:42,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1847621448, now seen corresponding path program 1 times [2021-10-11 02:31:42,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:42,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082301518] [2021-10-11 02:31:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:42,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:31:42,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:42,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:42,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082301518] [2021-10-11 02:31:42,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:42,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:42,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980174821] [2021-10-11 02:31:42,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:31:42,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:31:42,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:42,831 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2021-10-11 02:31:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:42,859 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2021-10-11 02:31:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:31:42,860 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 02:31:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:42,871 INFO L225 Difference]: With dead ends: 168 [2021-10-11 02:31:42,871 INFO L226 Difference]: Without dead ends: 83 [2021-10-11 02:31:42,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-11 02:31:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-11 02:31:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-10-11 02:31:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-10-11 02:31:42,919 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2021-10-11 02:31:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:42,919 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-10-11 02:31:42,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:31:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2021-10-11 02:31:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:31:42,920 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:42,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:43,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:31:43,134 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:43,135 INFO L82 PathProgramCache]: Analyzing trace with hash 800864551, now seen corresponding path program 1 times [2021-10-11 02:31:43,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:43,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270694848] [2021-10-11 02:31:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:43,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:43,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:43,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:43,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270694848] [2021-10-11 02:31:43,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:43,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:43,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945409662] [2021-10-11 02:31:43,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:43,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:43,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:43,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:43,456 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 3 states. [2021-10-11 02:31:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:43,477 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2021-10-11 02:31:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:43,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 02:31:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:43,484 INFO L225 Difference]: With dead ends: 83 [2021-10-11 02:31:43,484 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:31:43,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:31:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-11 02:31:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:31:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2021-10-11 02:31:43,502 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2021-10-11 02:31:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:43,502 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2021-10-11 02:31:43,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-10-11 02:31:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:31:43,503 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:43,503 INFO L422 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] [2021-10-11 02:31:43,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:31:43,704 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:43,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:43,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2126819203, now seen corresponding path program 1 times [2021-10-11 02:31:43,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:43,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734018072] [2021-10-11 02:31:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:43,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:43,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:44,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:44,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734018072] [2021-10-11 02:31:44,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:44,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:44,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832879639] [2021-10-11 02:31:44,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:44,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:44,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:44,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:44,021 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 3 states. [2021-10-11 02:31:44,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:44,030 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2021-10-11 02:31:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:44,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 02:31:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:44,032 INFO L225 Difference]: With dead ends: 68 [2021-10-11 02:31:44,032 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:31:44,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:31:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-11 02:31:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:31:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2021-10-11 02:31:44,039 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2021-10-11 02:31:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:44,040 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2021-10-11 02:31:44,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2021-10-11 02:31:44,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:31:44,041 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:44,041 INFO L422 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] [2021-10-11 02:31:44,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:31:44,249 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash -306622024, now seen corresponding path program 1 times [2021-10-11 02:31:44,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:44,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383614257] [2021-10-11 02:31:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:44,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:31:44,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:44,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:44,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383614257] [2021-10-11 02:31:44,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:44,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:44,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459469992] [2021-10-11 02:31:44,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:44,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:44,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:44,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:44,573 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2021-10-11 02:31:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:44,654 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-10-11 02:31:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:44,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-10-11 02:31:44,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:44,659 INFO L225 Difference]: With dead ends: 89 [2021-10-11 02:31:44,659 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 02:31:44,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 02:31:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-11 02:31:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 02:31:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2021-10-11 02:31:44,681 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2021-10-11 02:31:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:44,683 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2021-10-11 02:31:44,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2021-10-11 02:31:44,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:31:44,685 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:44,685 INFO L422 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] [2021-10-11 02:31:44,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:31:44,901 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:44,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1880803796, now seen corresponding path program 1 times [2021-10-11 02:31:44,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:44,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902480927] [2021-10-11 02:31:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:31:45,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:45,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:45,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902480927] [2021-10-11 02:31:45,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:45,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:45,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233720343] [2021-10-11 02:31:45,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:45,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:45,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:45,189 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 5 states. [2021-10-11 02:31:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:45,329 INFO L93 Difference]: Finished difference Result 203 states and 292 transitions. [2021-10-11 02:31:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:31:45,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-10-11 02:31:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:45,334 INFO L225 Difference]: With dead ends: 203 [2021-10-11 02:31:45,334 INFO L226 Difference]: Without dead ends: 153 [2021-10-11 02:31:45,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:31:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-11 02:31:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 98. [2021-10-11 02:31:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-10-11 02:31:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 134 transitions. [2021-10-11 02:31:45,378 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 134 transitions. Word has length 29 [2021-10-11 02:31:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:45,378 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 134 transitions. [2021-10-11 02:31:45,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 134 transitions. [2021-10-11 02:31:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:31:45,382 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:45,382 INFO L422 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] [2021-10-11 02:31:45,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:31:45,595 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:45,595 INFO L82 PathProgramCache]: Analyzing trace with hash 548279918, now seen corresponding path program 1 times [2021-10-11 02:31:45,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:45,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625780159] [2021-10-11 02:31:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:45,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:31:45,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:45,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:45,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625780159] [2021-10-11 02:31:45,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:45,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:45,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281132195] [2021-10-11 02:31:45,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:45,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:45,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:45,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:45,893 INFO L87 Difference]: Start difference. First operand 98 states and 134 transitions. Second operand 4 states. [2021-10-11 02:31:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:47,557 INFO L93 Difference]: Finished difference Result 246 states and 347 transitions. [2021-10-11 02:31:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:47,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2021-10-11 02:31:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:47,559 INFO L225 Difference]: With dead ends: 246 [2021-10-11 02:31:47,559 INFO L226 Difference]: Without dead ends: 196 [2021-10-11 02:31:47,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-11 02:31:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 189. [2021-10-11 02:31:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-10-11 02:31:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 262 transitions. [2021-10-11 02:31:47,582 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 262 transitions. Word has length 30 [2021-10-11 02:31:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:47,583 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 262 transitions. [2021-10-11 02:31:47,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 262 transitions. [2021-10-11 02:31:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:31:47,584 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:47,584 INFO L422 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] [2021-10-11 02:31:47,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:31:47,800 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:47,800 INFO L82 PathProgramCache]: Analyzing trace with hash 806445356, now seen corresponding path program 1 times [2021-10-11 02:31:47,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:47,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912445514] [2021-10-11 02:31:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:48,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:31:48,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:48,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:48,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912445514] [2021-10-11 02:31:48,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:48,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:48,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112433088] [2021-10-11 02:31:48,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:48,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:48,094 INFO L87 Difference]: Start difference. First operand 189 states and 262 transitions. Second operand 4 states. [2021-10-11 02:31:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:48,171 INFO L93 Difference]: Finished difference Result 566 states and 797 transitions. [2021-10-11 02:31:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:48,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2021-10-11 02:31:48,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:48,175 INFO L225 Difference]: With dead ends: 566 [2021-10-11 02:31:48,175 INFO L226 Difference]: Without dead ends: 422 [2021-10-11 02:31:48,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-10-11 02:31:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 191. [2021-10-11 02:31:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-10-11 02:31:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 263 transitions. [2021-10-11 02:31:48,233 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 263 transitions. Word has length 30 [2021-10-11 02:31:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:48,235 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 263 transitions. [2021-10-11 02:31:48,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 263 transitions. [2021-10-11 02:31:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:31:48,242 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:48,242 INFO L422 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] [2021-10-11 02:31:48,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:31:48,461 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 413418346, now seen corresponding path program 1 times [2021-10-11 02:31:48,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:48,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831836665] [2021-10-11 02:31:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:48,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:31:48,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:48,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:48,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831836665] [2021-10-11 02:31:48,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:48,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:31:48,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264779826] [2021-10-11 02:31:48,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:48,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:48,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:48,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:48,709 INFO L87 Difference]: Start difference. First operand 191 states and 263 transitions. Second operand 5 states. [2021-10-11 02:31:48,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:48,814 INFO L93 Difference]: Finished difference Result 572 states and 798 transitions. [2021-10-11 02:31:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:48,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-10-11 02:31:48,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:48,818 INFO L225 Difference]: With dead ends: 572 [2021-10-11 02:31:48,818 INFO L226 Difference]: Without dead ends: 387 [2021-10-11 02:31:48,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-10-11 02:31:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 200. [2021-10-11 02:31:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-10-11 02:31:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 271 transitions. [2021-10-11 02:31:48,846 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 271 transitions. Word has length 30 [2021-10-11 02:31:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:48,846 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 271 transitions. [2021-10-11 02:31:48,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 271 transitions. [2021-10-11 02:31:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 02:31:48,847 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:48,848 INFO L422 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] [2021-10-11 02:31:49,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:31:49,061 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:49,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:49,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1022834337, now seen corresponding path program 1 times [2021-10-11 02:31:49,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:49,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412045875] [2021-10-11 02:31:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:49,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:31:49,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:49,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:49,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412045875] [2021-10-11 02:31:49,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:49,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:31:49,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034214002] [2021-10-11 02:31:49,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:31:49,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:49,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:31:49,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:49,308 INFO L87 Difference]: Start difference. First operand 200 states and 271 transitions. Second operand 6 states. [2021-10-11 02:31:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:49,531 INFO L93 Difference]: Finished difference Result 1082 states and 1468 transitions. [2021-10-11 02:31:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:31:49,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-10-11 02:31:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:49,538 INFO L225 Difference]: With dead ends: 1082 [2021-10-11 02:31:49,538 INFO L226 Difference]: Without dead ends: 888 [2021-10-11 02:31:49,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:31:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-10-11 02:31:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 382. [2021-10-11 02:31:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2021-10-11 02:31:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 510 transitions. [2021-10-11 02:31:49,598 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 510 transitions. Word has length 33 [2021-10-11 02:31:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:49,599 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 510 transitions. [2021-10-11 02:31:49,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:31:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 510 transitions. [2021-10-11 02:31:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 02:31:49,600 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:49,600 INFO L422 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] [2021-10-11 02:31:49,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:31:49,816 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:49,817 INFO L82 PathProgramCache]: Analyzing trace with hash 752173025, now seen corresponding path program 1 times [2021-10-11 02:31:49,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:49,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597055556] [2021-10-11 02:31:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:50,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:31:50,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:50,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:50,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597055556] [2021-10-11 02:31:50,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:50,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:31:50,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323385541] [2021-10-11 02:31:50,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:31:50,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:50,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:31:50,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:31:50,088 INFO L87 Difference]: Start difference. First operand 382 states and 510 transitions. Second operand 6 states. [2021-10-11 02:31:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:51,875 INFO L93 Difference]: Finished difference Result 754 states and 1004 transitions. [2021-10-11 02:31:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:51,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-10-11 02:31:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:51,879 INFO L225 Difference]: With dead ends: 754 [2021-10-11 02:31:51,879 INFO L226 Difference]: Without dead ends: 462 [2021-10-11 02:31:51,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:31:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-11 02:31:51,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 376. [2021-10-11 02:31:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2021-10-11 02:31:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 498 transitions. [2021-10-11 02:31:51,951 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 498 transitions. Word has length 33 [2021-10-11 02:31:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:51,952 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 498 transitions. [2021-10-11 02:31:51,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:31:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 498 transitions. [2021-10-11 02:31:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 02:31:51,953 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:51,954 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:31:52,169 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,170 INFO L82 PathProgramCache]: Analyzing trace with hash -130752981, now seen corresponding path program 1 times [2021-10-11 02:31:52,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:52,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671234029] [2021-10-11 02:31:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:31:52,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:31:52,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:52,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671234029] [2021-10-11 02:31:52,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:52,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:31:52,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825298195] [2021-10-11 02:31:52,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:31:52,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:52,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:31:52,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:52,459 INFO L87 Difference]: Start difference. First operand 376 states and 498 transitions. Second operand 5 states. [2021-10-11 02:31:52,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:52,584 INFO L93 Difference]: Finished difference Result 846 states and 1124 transitions. [2021-10-11 02:31:52,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:31:52,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2021-10-11 02:31:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:52,588 INFO L225 Difference]: With dead ends: 846 [2021-10-11 02:31:52,588 INFO L226 Difference]: Without dead ends: 476 [2021-10-11 02:31:52,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:31:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-11 02:31:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 376. [2021-10-11 02:31:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2021-10-11 02:31:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 492 transitions. [2021-10-11 02:31:52,649 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 492 transitions. Word has length 47 [2021-10-11 02:31:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:52,649 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 492 transitions. [2021-10-11 02:31:52,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:31:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 492 transitions. [2021-10-11 02:31:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 02:31:52,650 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:52,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:31:52,863 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -640226071, now seen corresponding path program 1 times [2021-10-11 02:31:52,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:52,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716540827] [2021-10-11 02:31:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:31:53,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:31:53,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:53,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716540827] [2021-10-11 02:31:53,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:53,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:31:53,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335046052] [2021-10-11 02:31:53,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:53,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:53,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:53,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:53,076 INFO L87 Difference]: Start difference. First operand 376 states and 492 transitions. Second operand 4 states. [2021-10-11 02:31:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:53,161 INFO L93 Difference]: Finished difference Result 763 states and 1004 transitions. [2021-10-11 02:31:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:53,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2021-10-11 02:31:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:53,164 INFO L225 Difference]: With dead ends: 763 [2021-10-11 02:31:53,164 INFO L226 Difference]: Without dead ends: 393 [2021-10-11 02:31:53,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:31:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-10-11 02:31:53,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 324. [2021-10-11 02:31:53,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2021-10-11 02:31:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 421 transitions. [2021-10-11 02:31:53,209 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 421 transitions. Word has length 47 [2021-10-11 02:31:53,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:53,210 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 421 transitions. [2021-10-11 02:31:53,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 421 transitions. [2021-10-11 02:31:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-11 02:31:53,211 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:53,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:53,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:31:53,427 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:53,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:53,427 INFO L82 PathProgramCache]: Analyzing trace with hash -445753367, now seen corresponding path program 1 times [2021-10-11 02:31:53,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:53,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797484515] [2021-10-11 02:31:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:53,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:31:53,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:31:53,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:31:53,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797484515] [2021-10-11 02:31:53,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [685348627] [2021-10-11 02:31:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:31:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:54,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:31:54,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:31:54,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:31:54,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482201864] [2021-10-11 02:31:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:54,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:31:54,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:31:54,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:31:54,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:31:54,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-11 02:31:54,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016686554] [2021-10-11 02:31:54,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:31:54,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:54,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:31:54,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:31:54,364 INFO L87 Difference]: Start difference. First operand 324 states and 421 transitions. Second operand 10 states. [2021-10-11 02:31:56,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:56,852 INFO L93 Difference]: Finished difference Result 1429 states and 1890 transitions. [2021-10-11 02:31:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-11 02:31:56,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2021-10-11 02:31:56,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:56,860 INFO L225 Difference]: With dead ends: 1429 [2021-10-11 02:31:56,860 INFO L226 Difference]: Without dead ends: 1155 [2021-10-11 02:31:56,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:31:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2021-10-11 02:31:56,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 424. [2021-10-11 02:31:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2021-10-11 02:31:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 566 transitions. [2021-10-11 02:31:56,942 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 566 transitions. Word has length 48 [2021-10-11 02:31:56,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:56,943 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 566 transitions. [2021-10-11 02:31:56,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:31:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 566 transitions. [2021-10-11 02:31:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-11 02:31:56,945 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:56,945 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:31:57,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt [2021-10-11 02:31:57,561 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:57,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2129580319, now seen corresponding path program 2 times [2021-10-11 02:31:57,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:57,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736203109] [2021-10-11 02:31:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:31:59,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:00,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:01,069 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:32:01,069 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:01,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2021-10-11 02:32:01,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:01 BoogieIcfgContainer [2021-10-11 02:32:01,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:01,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:01,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:01,481 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:01,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:42" (3/4) ... [2021-10-11 02:32:01,484 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:32:01,643 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e1ff42-9f3e-4d06-a7cd-e5099dac98b8/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:01,643 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:01,644 INFO L168 Benchmark]: Toolchain (without parser) took 22833.94 ms. Allocated memory was 58.7 MB in the beginning and 113.2 MB in the end (delta: 54.5 MB). Free memory was 35.5 MB in the beginning and 28.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:01,645 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:01,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.33 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 35.3 MB in the beginning and 57.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:01,646 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.63 ms. Allocated memory is still 77.6 MB. Free memory was 56.8 MB in the beginning and 53.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:01,647 INFO L168 Benchmark]: Boogie Preprocessor took 102.41 ms. Allocated memory is still 77.6 MB. Free memory was 53.8 MB in the beginning and 51.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:01,647 INFO L168 Benchmark]: RCFGBuilder took 2568.41 ms. Allocated memory is still 77.6 MB. Free memory was 51.4 MB in the beginning and 37.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:01,647 INFO L168 Benchmark]: TraceAbstraction took 19158.49 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 37.1 MB in the beginning and 53.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:01,648 INFO L168 Benchmark]: Witness Printer took 162.03 ms. Allocated memory is still 113.2 MB. Free memory was 53.6 MB in the beginning and 28.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:01,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.5 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 726.33 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 35.3 MB in the beginning and 57.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.63 ms. Allocated memory is still 77.6 MB. Free memory was 56.8 MB in the beginning and 53.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.41 ms. Allocated memory is still 77.6 MB. Free memory was 53.8 MB in the beginning and 51.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2568.41 ms. Allocated memory is still 77.6 MB. Free memory was 51.4 MB in the beginning and 37.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19158.49 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 37.1 MB in the beginning and 53.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. * Witness Printer took 162.03 ms. Allocated memory is still 113.2 MB. Free memory was 53.6 MB in the beginning and 28.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 213]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int pumpRunning = 0; [L655] int systemActive = 1; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L200] int retValue_acc ; [L203] retValue_acc = 1 [L204] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L587] int splverifierCounter ; [L588] int tmp ; [L589] int tmp___0 ; [L590] int tmp___1 ; [L591] int tmp___2 ; [L594] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L596] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L598] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L604] tmp = __VERIFIER_nondet_int() [L606] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L661] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L693] COND TRUE ! pumpRunning [L805] int retValue_acc ; [L806] int tmp ; [L807] int tmp___0 ; [L129] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L811] tmp = isHighWaterSensorDry() [L813] COND FALSE !(\read(tmp)) [L816] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L818] retValue_acc = tmp___0 [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L695] tmp = isHighWaterLevel() [L697] COND TRUE \read(tmp) [L724] int tmp ; [L749] int retValue_acc ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L753] retValue_acc = isMethaneLevelCritical() [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L728] tmp = isMethaneAlarm() [L730] COND FALSE !(\read(tmp)) [L718] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L151] tmp = getWaterLevel() [L153] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L596] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L598] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L604] tmp = __VERIFIER_nondet_int() [L606] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L661] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L693] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L151] tmp = getWaterLevel() [L153] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L598] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] tmp = __VERIFIER_nondet_int() [L606] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L661] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L693] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L151] tmp = getWaterLevel() [L153] COND TRUE tmp == 0 [L760] int retValue_acc ; [L763] retValue_acc = pumpRunning [L764] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L155] tmp___0 = isPumpRunning() [L157] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L213] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.9s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1085 SDtfs, 1904 SDslu, 1968 SDs, 0 SdLazy, 348 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 668 GetRequests, 598 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=424occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 1974 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 627 ConstructedInterpolants, 0 QuantifiedInterpolants, 79907 SizeOfPredicates, 32 NumberOfNonLiveVariables, 3200 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 58/112 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! Received shutdown request...