./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:11,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:11,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:11,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:11,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:11,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:11,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:11,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:11,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:11,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:11,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:11,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:11,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:11,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:11,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:11,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:11,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:11,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:11,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:11,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:11,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:11,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:11,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:11,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:11,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:11,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:11,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:11,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:11,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:11,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:11,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:11,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:11,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:11,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:11,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:11,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:11,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:11,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:11,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:11,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:11,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:11,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:53:11,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:11,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:11,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:11,190 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:11,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:11,191 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:11,191 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:11,192 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:11,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:11,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:11,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:11,193 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:11,193 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:11,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:11,194 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:11,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:11,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:53:11,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:11,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:53:11,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:11,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:11,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:11,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:11,197 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:11,198 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:53:11,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:11,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:11,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:11,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:11,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:11,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:11,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:11,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:11,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:11,201 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:11,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:11,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:11,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:11,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:11,203 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_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b [2021-11-07 00:53:11,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:11,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:11,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:11,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:11,476 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:11,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-11-07 00:53:11,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/3c527cee8/de276b68029e4f0e9f4a1d8dba7d4a92/FLAG9819dbe0d [2021-11-07 00:53:12,149 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:12,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-11-07 00:53:12,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/3c527cee8/de276b68029e4f0e9f4a1d8dba7d4a92/FLAG9819dbe0d [2021-11-07 00:53:12,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/3c527cee8/de276b68029e4f0e9f4a1d8dba7d4a92 [2021-11-07 00:53:12,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:12,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:12,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:12,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:12,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:12,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:12" (1/1) ... [2021-11-07 00:53:12,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe43af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:12, skipping insertion in model container [2021-11-07 00:53:12,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:12" (1/1) ... [2021-11-07 00:53:12,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:12,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:12,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2021-11-07 00:53:12,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:12,909 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:53:12,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4bae6450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:12, skipping insertion in model container [2021-11-07 00:53:12,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:12,910 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:12,912 INFO L168 Benchmark]: Toolchain (without parser) took 433.65 ms. Allocated memory is still 130.0 MB. Free memory was 95.1 MB in the beginning and 103.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:12,913 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 58.6 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:12,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.91 ms. Allocated memory is still 130.0 MB. Free memory was 95.1 MB in the beginning and 103.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:12,915 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 58.6 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 430.91 ms. Allocated memory is still 130.0 MB. Free memory was 95.1 MB in the beginning and 103.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:15,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:15,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:15,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:15,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:15,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:15,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:15,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:15,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:15,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:15,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:15,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:15,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:15,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:15,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:15,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:15,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:15,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:15,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:15,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:15,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:15,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:15,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:15,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:15,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:15,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:15,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:15,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:15,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:15,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:15,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:15,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:15,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:15,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:15,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:15,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:15,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:15,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:15,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:15,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:15,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:15,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:53:15,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:15,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:15,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:15,360 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:15,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:15,360 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:15,361 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:15,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:15,362 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:15,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:15,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:53:15,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:53:15,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:15,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:15,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:15,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:15,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:15,366 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:15,366 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:15,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:53:15,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:15,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:15,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:15,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:15,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:15,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:15,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:15,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:15,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:15,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:15,368 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:15,368 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:15,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:15,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:15,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:15,369 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_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b [2021-11-07 00:53:15,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:15,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:15,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:15,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:15,826 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:15,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-11-07 00:53:15,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/2d932afec/c03be940271a434ca0c95e3442837cd0/FLAG53fd3a95e [2021-11-07 00:53:16,535 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:16,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-11-07 00:53:16,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/2d932afec/c03be940271a434ca0c95e3442837cd0/FLAG53fd3a95e [2021-11-07 00:53:16,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/data/2d932afec/c03be940271a434ca0c95e3442837cd0 [2021-11-07 00:53:16,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:16,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:16,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:16,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:16,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:16,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438fc50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16, skipping insertion in model container [2021-11-07 00:53:16,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:16,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:17,254 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2021-11-07 00:53:17,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:17,279 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:17,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:17,369 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2021-11-07 00:53:17,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:17,399 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:17,510 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2021-11-07 00:53:17,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:17,537 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:17,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17 WrapperNode [2021-11-07 00:53:17,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:17,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:17,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:17,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:17,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:17,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:17,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:17,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:17,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:17,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:17,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:17,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:17,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:17,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:17,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:17,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:20,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:53:20,217 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2021-11-07 00:53:20,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:20 BoogieIcfgContainer [2021-11-07 00:53:20,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:53:20,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:53:20,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:53:20,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:53:20,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:16" (1/3) ... [2021-11-07 00:53:20,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d2a699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:20, skipping insertion in model container [2021-11-07 00:53:20,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17" (2/3) ... [2021-11-07 00:53:20,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d2a699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:20, skipping insertion in model container [2021-11-07 00:53:20,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:20" (3/3) ... [2021-11-07 00:53:20,229 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2021-11-07 00:53:20,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:53:20,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 00:53:20,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:53:20,301 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:53:20,301 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 00:53:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 110 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:53:20,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:20,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:20,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1529342393, now seen corresponding path program 1 times [2021-11-07 00:53:20,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:20,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13320696] [2021-11-07 00:53:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:20,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:20,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:20,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:53:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:20,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:53:20,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:20,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:20,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:20,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13320696] [2021-11-07 00:53:20,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13320696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:20,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:20,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:53:20,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42101337] [2021-11-07 00:53:20,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:53:20,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:53:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:53:20,764 INFO L87 Difference]: Start difference. First operand has 111 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 110 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:20,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:20,830 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2021-11-07 00:53:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:53:20,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 00:53:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:20,842 INFO L225 Difference]: With dead ends: 216 [2021-11-07 00:53:20,843 INFO L226 Difference]: Without dead ends: 107 [2021-11-07 00:53:20,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:53:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-07 00:53:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-07 00:53:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.5) internal successors, (156), 106 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2021-11-07 00:53:20,886 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2021-11-07 00:53:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:20,887 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2021-11-07 00:53:20,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2021-11-07 00:53:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 00:53:20,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:20,889 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:20,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:21,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:21,110 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:21,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1945506518, now seen corresponding path program 1 times [2021-11-07 00:53:21,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:21,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75532266] [2021-11-07 00:53:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:21,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:21,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:21,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:21,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:53:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:21,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:53:21,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:21,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:21,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:21,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75532266] [2021-11-07 00:53:21,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75532266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:21,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:21,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:53:21,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70689431] [2021-11-07 00:53:21,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:21,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:21,431 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:21,462 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2021-11-07 00:53:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:21,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 00:53:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:21,465 INFO L225 Difference]: With dead ends: 107 [2021-11-07 00:53:21,465 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 00:53:21,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 00:53:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-07 00:53:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2021-11-07 00:53:21,475 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2021-11-07 00:53:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:21,475 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2021-11-07 00:53:21,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2021-11-07 00:53:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 00:53:21,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:21,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:21,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:21,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:21,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1939738244, now seen corresponding path program 1 times [2021-11-07 00:53:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:21,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763117111] [2021-11-07 00:53:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:21,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:21,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:21,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:21,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:53:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:21,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:53:21,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:22,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:22,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:22,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763117111] [2021-11-07 00:53:22,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763117111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:22,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:22,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:53:22,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127845899] [2021-11-07 00:53:22,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:22,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:22,075 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:22,110 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2021-11-07 00:53:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 00:53:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:22,114 INFO L225 Difference]: With dead ends: 84 [2021-11-07 00:53:22,114 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 00:53:22,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 00:53:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-07 00:53:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2021-11-07 00:53:22,120 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2021-11-07 00:53:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:22,121 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2021-11-07 00:53:22,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2021-11-07 00:53:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 00:53:22,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:22,126 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:22,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:22,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:22,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1547834963, now seen corresponding path program 1 times [2021-11-07 00:53:22,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:22,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148661865] [2021-11-07 00:53:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:22,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:22,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:22,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:22,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:53:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:22,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:53:22,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:22,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:22,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:22,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148661865] [2021-11-07 00:53:22,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148661865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:22,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:22,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:53:22,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111710764] [2021-11-07 00:53:22,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:22,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:22,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:22,674 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:22,723 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2021-11-07 00:53:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:22,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 00:53:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:22,725 INFO L225 Difference]: With dead ends: 105 [2021-11-07 00:53:22,725 INFO L226 Difference]: Without dead ends: 66 [2021-11-07 00:53:22,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-07 00:53:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-11-07 00:53:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2021-11-07 00:53:22,734 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2021-11-07 00:53:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:22,734 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2021-11-07 00:53:22,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2021-11-07 00:53:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 00:53:22,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:22,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:22,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:22,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:22,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1827782978, now seen corresponding path program 1 times [2021-11-07 00:53:22,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:22,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189970563] [2021-11-07 00:53:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:22,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:22,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:22,955 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:22,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:53:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:23,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:53:23,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:23,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:23,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:23,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189970563] [2021-11-07 00:53:23,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189970563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:23,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:23,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:53:23,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722994201] [2021-11-07 00:53:23,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:53:23,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:53:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:23,331 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:23,404 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2021-11-07 00:53:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:53:23,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 00:53:23,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:23,407 INFO L225 Difference]: With dead ends: 171 [2021-11-07 00:53:23,407 INFO L226 Difference]: Without dead ends: 113 [2021-11-07 00:53:23,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-07 00:53:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2021-11-07 00:53:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2021-11-07 00:53:23,428 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2021-11-07 00:53:23,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:23,428 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2021-11-07 00:53:23,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2021-11-07 00:53:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 00:53:23,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:23,435 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:23,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:23,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:23,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash 834728065, now seen corresponding path program 1 times [2021-11-07 00:53:23,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:23,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698003721] [2021-11-07 00:53:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:23,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:23,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:23,658 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:23,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:53:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:23,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:53:23,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:24,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:24,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:24,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698003721] [2021-11-07 00:53:24,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698003721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:24,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:24,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:53:24,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561561713] [2021-11-07 00:53:24,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:53:24,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:53:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:24,141 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:24,263 INFO L93 Difference]: Finished difference Result 344 states and 483 transitions. [2021-11-07 00:53:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:53:24,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 00:53:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:24,266 INFO L225 Difference]: With dead ends: 344 [2021-11-07 00:53:24,266 INFO L226 Difference]: Without dead ends: 280 [2021-11-07 00:53:24,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:53:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-07 00:53:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 128. [2021-11-07 00:53:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3779527559055118) internal successors, (175), 127 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2021-11-07 00:53:24,285 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 30 [2021-11-07 00:53:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:24,286 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2021-11-07 00:53:24,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2021-11-07 00:53:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 00:53:24,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:24,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:24,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:24,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:24,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1506496567, now seen corresponding path program 1 times [2021-11-07 00:53:24,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:24,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130677431] [2021-11-07 00:53:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:24,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:24,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:24,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:53:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:24,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:53:24,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:24,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:24,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:24,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130677431] [2021-11-07 00:53:24,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130677431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:24,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:24,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:53:24,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804325959] [2021-11-07 00:53:24,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:53:24,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:53:24,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:24,949 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:25,119 INFO L93 Difference]: Finished difference Result 366 states and 502 transitions. [2021-11-07 00:53:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:53:25,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 00:53:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:25,122 INFO L225 Difference]: With dead ends: 366 [2021-11-07 00:53:25,122 INFO L226 Difference]: Without dead ends: 364 [2021-11-07 00:53:25,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:53:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-07 00:53:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 128. [2021-11-07 00:53:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3700787401574803) internal successors, (174), 127 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2021-11-07 00:53:25,141 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 31 [2021-11-07 00:53:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:25,141 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2021-11-07 00:53:25,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:25,141 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2021-11-07 00:53:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 00:53:25,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:25,143 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:25,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:25,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:25,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1549041486, now seen corresponding path program 1 times [2021-11-07 00:53:25,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:25,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207994173] [2021-11-07 00:53:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:25,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:25,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:25,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:25,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:53:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:25,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:53:25,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:25,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:25,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:25,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207994173] [2021-11-07 00:53:25,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207994173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:25,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:25,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:53:25,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484923086] [2021-11-07 00:53:25,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:53:25,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:53:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:53:25,760 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:25,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:25,830 INFO L93 Difference]: Finished difference Result 346 states and 466 transitions. [2021-11-07 00:53:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:53:25,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 00:53:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:25,833 INFO L225 Difference]: With dead ends: 346 [2021-11-07 00:53:25,833 INFO L226 Difference]: Without dead ends: 224 [2021-11-07 00:53:25,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-07 00:53:25,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2021-11-07 00:53:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.348148148148148) internal successors, (182), 135 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2021-11-07 00:53:25,871 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 31 [2021-11-07 00:53:25,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:25,871 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2021-11-07 00:53:25,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:25,871 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2021-11-07 00:53:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 00:53:25,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:25,872 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:25,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:26,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:26,085 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:26,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1290876048, now seen corresponding path program 1 times [2021-11-07 00:53:26,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:26,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502008719] [2021-11-07 00:53:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:26,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:26,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:26,087 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:26,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:53:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:26,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:53:26,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:26,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:26,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:26,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502008719] [2021-11-07 00:53:26,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502008719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:26,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 00:53:26,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833403349] [2021-11-07 00:53:26,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:26,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:26,526 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:26,585 INFO L93 Difference]: Finished difference Result 418 states and 562 transitions. [2021-11-07 00:53:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:53:26,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 00:53:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:26,587 INFO L225 Difference]: With dead ends: 418 [2021-11-07 00:53:26,587 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 00:53:26,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 00:53:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 236. [2021-11-07 00:53:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3319148936170213) internal successors, (313), 235 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 313 transitions. [2021-11-07 00:53:26,633 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 313 transitions. Word has length 31 [2021-11-07 00:53:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:26,634 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 313 transitions. [2021-11-07 00:53:26,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 313 transitions. [2021-11-07 00:53:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 00:53:26,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:26,634 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:26,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:26,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:26,835 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash 891331378, now seen corresponding path program 1 times [2021-11-07 00:53:26,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:26,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326034829] [2021-11-07 00:53:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:26,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:26,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:26,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:53:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:53:27,929 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 00:53:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:53:29,599 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 00:53:29,600 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 00:53:29,600 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:53:29,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:53:29,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:53:29,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:29,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:29,823 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:29,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:53:29,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:53:29 BoogieIcfgContainer [2021-11-07 00:53:29,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:53:29,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:53:29,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:53:29,967 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:53:29,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:20" (3/4) ... [2021-11-07 00:53:29,971 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 00:53:30,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 00:53:30,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:53:30,096 INFO L168 Benchmark]: Toolchain (without parser) took 13256.15 ms. Allocated memory was 58.7 MB in the beginning and 98.6 MB in the end (delta: 39.8 MB). Free memory was 35.4 MB in the beginning and 30.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:30,096 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:30,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.37 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 35.2 MB in the beginning and 49.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:30,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.99 ms. Allocated memory is still 81.8 MB. Free memory was 49.5 MB in the beginning and 45.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:30,098 INFO L168 Benchmark]: Boogie Preprocessor took 74.83 ms. Allocated memory is still 81.8 MB. Free memory was 45.9 MB in the beginning and 43.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:30,098 INFO L168 Benchmark]: RCFGBuilder took 2512.24 ms. Allocated memory is still 81.8 MB. Free memory was 43.1 MB in the beginning and 57.8 MB in the end (delta: -14.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:30,098 INFO L168 Benchmark]: TraceAbstraction took 9743.69 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 57.3 MB in the beginning and 43.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:30,099 INFO L168 Benchmark]: Witness Printer took 127.35 ms. Allocated memory is still 98.6 MB. Free memory was 43.9 MB in the beginning and 30.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:30,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 697.37 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 35.2 MB in the beginning and 49.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.99 ms. Allocated memory is still 81.8 MB. Free memory was 49.5 MB in the beginning and 45.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.83 ms. Allocated memory is still 81.8 MB. Free memory was 45.9 MB in the beginning and 43.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2512.24 ms. Allocated memory is still 81.8 MB. Free memory was 43.1 MB in the beginning and 57.8 MB in the end (delta: -14.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9743.69 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 57.3 MB in the beginning and 43.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * Witness Printer took 127.35 ms. Allocated memory is still 98.6 MB. Free memory was 43.9 MB in the beginning and 30.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 847]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L777] int splverifierCounter ; [L778] int tmp ; [L779] int tmp___0 ; [L780] int tmp___1 ; [L781] int tmp___2 ; [L784] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L788] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L794] tmp = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L804] tmp___0 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L883] COND FALSE !(\read(methaneLevelCritical)) [L886] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L814] tmp___2 = __VERIFIER_nondet_int() [L816] COND TRUE \read(tmp___2) [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE \read(systemActive) [L652] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L655] COND FALSE !(\read(pumpRunning)) [L626] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] COND TRUE ! pumpRunning [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L933] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L680] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L193] int tmp ; [L194] int tmp___0 ; [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L198] tmp = isMethaneLevelCritical() [L200] COND TRUE \read(tmp) [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L202] tmp___0 = isPumpRunning() [L204] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L847] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 847]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 797 SDtfs, 956 SDslu, 1168 SDs, 0 SdLazy, 165 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 573 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 446 ConstructedInterpolants, 0 QuantifiedInterpolants, 734 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1831 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 00:53:30,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593cbaf8-e0a1-4999-b218-2458816fc0d2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE