./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/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_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/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_66627aef-a8d4-45c0-b951-8034cda943c5/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 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:01:52,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:01:52,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:01:52,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:01:52,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:01:52,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:01:52,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:01:52,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:01:52,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:01:52,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:01:52,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:01:52,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:01:52,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:01:52,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:01:52,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:01:52,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:01:52,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:01:52,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:01:52,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:01:52,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:01:52,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:01:52,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:01:52,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:01:52,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:01:52,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:01:52,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:01:52,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:01:52,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:01:52,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:01:52,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:01:52,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:01:52,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:01:52,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:01:52,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:01:52,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:01:52,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:01:52,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:01:52,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:01:52,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:01:52,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:01:52,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:01:52,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:01:52,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:01:52,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:01:52,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:01:52,253 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:01:52,253 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:01:52,253 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:01:52,254 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:01:52,254 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:01:52,254 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:01:52,254 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:01:52,255 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:01:52,255 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:01:52,256 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:01:52,256 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:01:52,257 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:01:52,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:01:52,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:01:52,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:01:52,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:01:52,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:01:52,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:01:52,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:01:52,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:01:52,260 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:01:52,260 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:01:52,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:01:52,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:01:52,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:01:52,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:01:52,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:01:52,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:01:52,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:01:52,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:01:52,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:01:52,267 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:01:52,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:01:52,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:01:52,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:01:52,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:01:52,269 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_66627aef-a8d4-45c0-b951-8034cda943c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c [2021-11-07 01:01:52,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:01:52,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:01:52,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:01:52,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:01:52,671 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:01:52,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-11-07 01:01:52,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/17cd578de/0d47854086cc4af08d55cd914c95b156/FLAG27a2d8220 [2021-11-07 01:01:53,475 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:01:53,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-11-07 01:01:53,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/17cd578de/0d47854086cc4af08d55cd914c95b156/FLAG27a2d8220 [2021-11-07 01:01:53,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/17cd578de/0d47854086cc4af08d55cd914c95b156 [2021-11-07 01:01:53,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:01:53,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:01:53,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:53,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:01:53,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:01:53,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:53" (1/1) ... [2021-11-07 01:01:53,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3a8ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:53, skipping insertion in model container [2021-11-07 01:01:53,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:53" (1/1) ... [2021-11-07 01:01:53,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:01:53,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:01:54,153 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_66627aef-a8d4-45c0-b951-8034cda943c5/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-11-07 01:01:54,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:54,185 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 01:01:54,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@298446c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:54, skipping insertion in model container [2021-11-07 01:01:54,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:54,186 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:01:54,189 INFO L168 Benchmark]: Toolchain (without parser) took 440.84 ms. Allocated memory is still 107.0 MB. Free memory was 63.9 MB in the beginning and 76.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:01:54,190 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 80.9 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:01:54,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.48 ms. Allocated memory is still 107.0 MB. Free memory was 63.7 MB in the beginning and 76.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:01:54,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 80.9 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 437.48 ms. Allocated memory is still 107.0 MB. Free memory was 63.7 MB in the beginning and 76.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 78]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- 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_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/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_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/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_66627aef-a8d4-45c0-b951-8034cda943c5/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 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:01:56,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:01:56,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:01:56,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:01:56,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:01:56,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:01:56,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:01:56,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:01:56,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:01:56,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:01:56,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:01:56,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:01:56,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:01:56,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:01:56,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:01:56,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:01:56,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:01:56,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:01:56,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:01:56,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:01:56,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:01:56,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:01:56,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:01:56,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:01:56,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:01:56,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:01:56,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:01:56,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:01:56,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:01:56,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:01:56,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:01:56,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:01:56,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:01:56,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:01:56,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:01:56,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:01:56,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:01:56,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:01:56,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:01:56,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:01:56,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:01:56,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:01:56,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:01:56,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:01:56,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:01:56,928 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:01:56,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:01:56,928 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:01:56,928 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:01:56,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:01:56,929 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:01:56,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:01:56,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:01:56,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:01:56,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:01:56,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:01:56,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:01:56,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:01:56,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:01:56,934 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:01:56,934 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:01:56,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:01:56,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:01:56,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:01:56,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:01:56,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:01:56,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:01:56,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:01:56,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:01:56,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:01:56,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:01:56,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:01:56,937 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:01:56,937 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:01:56,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:01:56,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:01:56,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:01:56,939 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_66627aef-a8d4-45c0-b951-8034cda943c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c [2021-11-07 01:01:57,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:01:57,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:01:57,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:01:57,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:01:57,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:01:57,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-11-07 01:01:57,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/13c7bb4d1/818d47215a1c4be7bb7ed52fbc08aebb/FLAG7fce7f31f [2021-11-07 01:01:58,175 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:01:58,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-11-07 01:01:58,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/13c7bb4d1/818d47215a1c4be7bb7ed52fbc08aebb/FLAG7fce7f31f [2021-11-07 01:01:58,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/data/13c7bb4d1/818d47215a1c4be7bb7ed52fbc08aebb [2021-11-07 01:01:58,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:01:58,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:01:58,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:58,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:01:58,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:01:58,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:58" (1/1) ... [2021-11-07 01:01:58,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703b593f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:58, skipping insertion in model container [2021-11-07 01:01:58,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:01:58" (1/1) ... [2021-11-07 01:01:58,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:01:58,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:01:58,823 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_66627aef-a8d4-45c0-b951-8034cda943c5/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-11-07 01:01:58,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:58,858 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:01:58,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:01:58,940 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_66627aef-a8d4-45c0-b951-8034cda943c5/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-11-07 01:01:58,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:58,948 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:01:59,022 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_66627aef-a8d4-45c0-b951-8034cda943c5/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-11-07 01:01:59,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:01:59,058 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:01:59,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59 WrapperNode [2021-11-07 01:01:59,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:01:59,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:01:59,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:01:59,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:01:59,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:01:59,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:01:59,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:01:59,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:01:59,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:01:59,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:01:59,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:01:59,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:01:59,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (1/1) ... [2021-11-07 01:01:59,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:01:59,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:59,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:01:59,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:01:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:01:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:01:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:01:59,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:02:01,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:02:01,986 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-11-07 01:02:01,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:01 BoogieIcfgContainer [2021-11-07 01:02:01,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:02:01,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:02:01,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:02:01,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:02:01,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:01:58" (1/3) ... [2021-11-07 01:02:01,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3869d38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:01, skipping insertion in model container [2021-11-07 01:02:01,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:01:59" (2/3) ... [2021-11-07 01:02:01,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3869d38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:01, skipping insertion in model container [2021-11-07 01:02:01,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:01" (3/3) ... [2021-11-07 01:02:01,999 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2021-11-07 01:02:02,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:02:02,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 01:02:02,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:02:02,087 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 01:02:02,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 01:02:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:02,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:02:02,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:02,122 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:02,123 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 01:02:02,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:02,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1847621448, now seen corresponding path program 1 times [2021-11-07 01:02:02,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:02,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116110720] [2021-11-07 01:02:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:02,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:02,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:02,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:02,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:02:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:02,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:02:02,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:02,488 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 01:02:02,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:02,574 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 01:02:02,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:02,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116110720] [2021-11-07 01:02:02,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116110720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:02,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:02,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:02:02,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455123266] [2021-11-07 01:02:02,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:02:02,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:02:02,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:02:02,603 INFO L87 Difference]: Start difference. First operand has 87 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:02,640 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2021-11-07 01:02:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:02:02,642 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 01:02:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:02,658 INFO L225 Difference]: With dead ends: 168 [2021-11-07 01:02:02,658 INFO L226 Difference]: Without dead ends: 83 [2021-11-07 01:02:02,663 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 01:02:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-07 01:02:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-07 01:02:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.4625) internal successors, (117), 82 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2021-11-07 01:02:02,722 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2021-11-07 01:02:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:02,723 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2021-11-07 01:02:02,723 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 01:02:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2021-11-07 01:02:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:02:02,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:02,726 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 01:02:02,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:02,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:02,941 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 01:02:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash 800864551, now seen corresponding path program 1 times [2021-11-07 01:02:02,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:02,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629318056] [2021-11-07 01:02:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:02,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:02,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:02,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:02:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:03,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:02:03,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:03,284 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 01:02:03,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:03,359 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 01:02:03,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:03,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629318056] [2021-11-07 01:02:03,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629318056] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:03,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:03,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:02:03,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317394105] [2021-11-07 01:02:03,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:03,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:03,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:02:03,364 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:03,381 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2021-11-07 01:02:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:02:03,382 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 01:02:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:03,383 INFO L225 Difference]: With dead ends: 83 [2021-11-07 01:02:03,383 INFO L226 Difference]: Without dead ends: 37 [2021-11-07 01:02:03,389 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 01:02:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-07 01:02:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-07 01:02:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2021-11-07 01:02:03,402 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2021-11-07 01:02:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:03,403 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2021-11-07 01:02:03,404 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 01:02:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2021-11-07 01:02:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:02:03,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:03,411 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 01:02:03,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:03,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:03,636 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 01:02:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:03,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2126819203, now seen corresponding path program 1 times [2021-11-07 01:02:03,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:03,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021324555] [2021-11-07 01:02:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:03,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:03,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:03,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:02:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:03,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:02:03,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:03,965 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 01:02:03,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:04,070 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 01:02:04,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:04,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021324555] [2021-11-07 01:02:04,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021324555] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:04,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:04,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:02:04,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861016051] [2021-11-07 01:02:04,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:04,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:02:04,074 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:04,083 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2021-11-07 01:02:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:02:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 01:02:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:04,085 INFO L225 Difference]: With dead ends: 68 [2021-11-07 01:02:04,085 INFO L226 Difference]: Without dead ends: 37 [2021-11-07 01:02:04,086 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 01:02:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-07 01:02:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-07 01:02:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2021-11-07 01:02:04,092 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2021-11-07 01:02:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:04,092 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2021-11-07 01:02:04,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2021-11-07 01:02:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:02:04,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:04,094 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:04,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:04,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:04,308 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 01:02:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash -306622024, now seen corresponding path program 1 times [2021-11-07 01:02:04,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:04,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460760171] [2021-11-07 01:02:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:04,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:04,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:04,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:04,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:02:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:04,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:02:04,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:04,623 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 01:02:04,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:04,710 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 01:02:04,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:04,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460760171] [2021-11-07 01:02:04,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460760171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:04,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:04,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:02:04,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205291557] [2021-11-07 01:02:04,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:02:04,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:02:04,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:02:04,715 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:04,770 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2021-11-07 01:02:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:02:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 01:02:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:04,772 INFO L225 Difference]: With dead ends: 89 [2021-11-07 01:02:04,772 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 01:02:04,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:02:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 01:02:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-11-07 01:02:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 55 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2021-11-07 01:02:04,791 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2021-11-07 01:02:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:04,792 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2021-11-07 01:02:04,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2021-11-07 01:02:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:02:04,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:04,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:04,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:05,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:05,007 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 01:02:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1880803796, now seen corresponding path program 1 times [2021-11-07 01:02:05,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:05,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494270944] [2021-11-07 01:02:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:05,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:05,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:05,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:02:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:05,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:02:05,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:05,384 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 01:02:05,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:05,495 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 01:02:05,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:05,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494270944] [2021-11-07 01:02:05,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494270944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:05,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:05,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:02:05,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100489255] [2021-11-07 01:02:05,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:02:05,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:02:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:05,504 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:05,646 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2021-11-07 01:02:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:02:05,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 01:02:05,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:05,652 INFO L225 Difference]: With dead ends: 266 [2021-11-07 01:02:05,652 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 01:02:05,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:02:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 01:02:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 100. [2021-11-07 01:02:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2021-11-07 01:02:05,690 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 29 [2021-11-07 01:02:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:05,691 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2021-11-07 01:02:05,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2021-11-07 01:02:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:02:05,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:05,695 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 01:02:05,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:05,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:05,912 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 01:02:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash 634718134, now seen corresponding path program 1 times [2021-11-07 01:02:05,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:05,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605478220] [2021-11-07 01:02:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:05,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:05,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:05,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:05,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:02:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:06,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:02:06,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:06,282 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 01:02:06,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:06,393 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 01:02:06,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:06,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605478220] [2021-11-07 01:02:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605478220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:06,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:06,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:02:06,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552494398] [2021-11-07 01:02:06,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:02:06,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:02:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:06,400 INFO L87 Difference]: Start difference. First operand 100 states and 139 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:06,545 INFO L93 Difference]: Finished difference Result 280 states and 394 transitions. [2021-11-07 01:02:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:02:06,546 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 01:02:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:06,548 INFO L225 Difference]: With dead ends: 280 [2021-11-07 01:02:06,548 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 01:02:06,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:02:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 01:02:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-11-07 01:02:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.393939393939394) internal successors, (138), 99 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2021-11-07 01:02:06,581 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 30 [2021-11-07 01:02:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:06,582 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2021-11-07 01:02:06,583 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 01:02:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2021-11-07 01:02:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:02:06,589 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:06,590 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:06,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:06,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:06,805 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 01:02:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 719357973, now seen corresponding path program 1 times [2021-11-07 01:02:06,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:06,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455154166] [2021-11-07 01:02:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:06,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:06,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:06,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:06,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:02:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:07,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:02:07,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:07,174 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 01:02:07,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:07,256 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 01:02:07,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:07,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455154166] [2021-11-07 01:02:07,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455154166] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:07,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:07,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:02:07,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781294611] [2021-11-07 01:02:07,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:02:07,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:02:07,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:02:07,261 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:07,330 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2021-11-07 01:02:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:02:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 01:02:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:07,335 INFO L225 Difference]: With dead ends: 270 [2021-11-07 01:02:07,335 INFO L226 Difference]: Without dead ends: 176 [2021-11-07 01:02:07,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:02:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-07 01:02:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2021-11-07 01:02:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 105 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2021-11-07 01:02:07,358 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 33 [2021-11-07 01:02:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:07,358 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2021-11-07 01:02:07,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2021-11-07 01:02:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:02:07,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:07,362 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:07,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:07,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:07,568 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 01:02:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:07,569 INFO L85 PathProgramCache]: Analyzing trace with hash 132551959, now seen corresponding path program 1 times [2021-11-07 01:02:07,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:07,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290779566] [2021-11-07 01:02:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:07,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:07,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:07,570 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:07,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:02:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:07,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:02:07,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:07,930 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 01:02:07,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:08,024 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 01:02:08,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:08,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290779566] [2021-11-07 01:02:08,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290779566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:08,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:08,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:02:08,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441973613] [2021-11-07 01:02:08,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:02:08,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:08,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:02:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:02:08,028 INFO L87 Difference]: Start difference. First operand 106 states and 144 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:08,103 INFO L93 Difference]: Finished difference Result 288 states and 390 transitions. [2021-11-07 01:02:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:02:08,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 01:02:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:08,105 INFO L225 Difference]: With dead ends: 288 [2021-11-07 01:02:08,105 INFO L226 Difference]: Without dead ends: 188 [2021-11-07 01:02:08,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:02:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-07 01:02:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 110. [2021-11-07 01:02:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3577981651376148) internal successors, (148), 109 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2021-11-07 01:02:08,123 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 33 [2021-11-07 01:02:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:08,124 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2021-11-07 01:02:08,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2021-11-07 01:02:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:02:08,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:08,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:08,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:02:08,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:08,340 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 01:02:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1147311719, now seen corresponding path program 1 times [2021-11-07 01:02:08,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:08,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724171886] [2021-11-07 01:02:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:08,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:08,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:08,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:08,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:02:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:08,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:02:08,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:08,722 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 01:02:08,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:08,867 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 01:02:08,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:08,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724171886] [2021-11-07 01:02:08,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724171886] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:08,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:08,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:02:08,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601418189] [2021-11-07 01:02:08,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:02:08,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:02:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:02:08,873 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:08,940 INFO L93 Difference]: Finished difference Result 346 states and 468 transitions. [2021-11-07 01:02:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:02:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 01:02:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:08,942 INFO L225 Difference]: With dead ends: 346 [2021-11-07 01:02:08,943 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 01:02:08,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:02:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 01:02:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 192. [2021-11-07 01:02:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3455497382198953) internal successors, (257), 191 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2021-11-07 01:02:08,972 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 257 transitions. Word has length 33 [2021-11-07 01:02:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:08,973 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-07 01:02:08,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 257 transitions. [2021-11-07 01:02:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:02:08,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:08,975 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:08,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:09,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:09,188 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 01:02:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash 9984219, now seen corresponding path program 1 times [2021-11-07 01:02:09,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:09,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851076843] [2021-11-07 01:02:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:09,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:09,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:09,190 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:09,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:02:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:09,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:02:09,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:09,655 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 01:02:09,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:09,835 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 01:02:09,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:09,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851076843] [2021-11-07 01:02:09,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851076843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:02:09,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:02:09,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:02:09,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434582246] [2021-11-07 01:02:09,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:02:09,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:02:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:02:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:02:09,838 INFO L87 Difference]: Start difference. First operand 192 states and 257 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:12,902 INFO L93 Difference]: Finished difference Result 788 states and 1036 transitions. [2021-11-07 01:02:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:02:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:02:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:12,912 INFO L225 Difference]: With dead ends: 788 [2021-11-07 01:02:12,912 INFO L226 Difference]: Without dead ends: 602 [2021-11-07 01:02:12,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:02:12,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-07 01:02:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 192. [2021-11-07 01:02:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3193717277486912) internal successors, (252), 191 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2021-11-07 01:02:12,955 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 34 [2021-11-07 01:02:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:12,956 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2021-11-07 01:02:12,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:02:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2021-11-07 01:02:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:02:12,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:12,959 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:12,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:13,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:13,179 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:02:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:13,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1795003067, now seen corresponding path program 1 times [2021-11-07 01:02:13,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:02:13,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93548923] [2021-11-07 01:02:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:13,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:02:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:02:13,181 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:02:13,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:02:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:02:14,957 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:02:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:02:16,498 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:02:16,498 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:02:16,499 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:16,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:16,501 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:02:16,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:16,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:02:16,728 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:16,744 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:02:16,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:02:16 BoogieIcfgContainer [2021-11-07 01:02:16,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:02:16,914 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:02:16,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:02:16,915 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:02:16,915 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:01" (3/4) ... [2021-11-07 01:02:16,923 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:02:17,040 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:02:17,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:02:17,042 INFO L168 Benchmark]: Toolchain (without parser) took 18619.98 ms. Allocated memory was 71.3 MB in the beginning and 111.1 MB in the end (delta: 39.8 MB). Free memory was 49.7 MB in the beginning and 59.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:17,042 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:02:17,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.45 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 40.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:17,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.12 ms. Allocated memory is still 71.3 MB. Free memory was 40.2 MB in the beginning and 37.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:17,044 INFO L168 Benchmark]: Boogie Preprocessor took 81.83 ms. Allocated memory is still 71.3 MB. Free memory was 37.0 MB in the beginning and 34.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:17,044 INFO L168 Benchmark]: RCFGBuilder took 2750.23 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 34.7 MB in the beginning and 51.1 MB in the end (delta: -16.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:17,045 INFO L168 Benchmark]: TraceAbstraction took 14922.65 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 50.6 MB in the beginning and 78.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:17,045 INFO L168 Benchmark]: Witness Printer took 125.90 ms. Allocated memory is still 111.1 MB. Free memory was 78.8 MB in the beginning and 59.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:02:17,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 631.45 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 40.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.12 ms. Allocated memory is still 71.3 MB. Free memory was 40.2 MB in the beginning and 37.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.83 ms. Allocated memory is still 71.3 MB. Free memory was 37.0 MB in the beginning and 34.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2750.23 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 34.7 MB in the beginning and 51.1 MB in the end (delta: -16.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14922.65 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 50.6 MB in the beginning and 78.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Witness Printer took 125.90 ms. Allocated memory is still 111.1 MB. Free memory was 78.8 MB in the beginning and 59.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 897]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int waterLevel = 1; [L491] int methaneLevelCritical = 0; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L759] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L835] int retValue_acc ; [L836] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L884] int retValue_acc ; [L887] retValue_acc = 1 [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] tmp = valid_product() [L844] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L438] tmp = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L508] COND TRUE waterLevel < 2 [L509] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L603] COND TRUE \read(systemActive) [L625] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L628] COND TRUE ! pumpRunning [L740] int retValue_acc ; [L741] int tmp ; [L742] int tmp___0 ; [L570] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] COND FALSE !(waterLevel < 2) [L577] retValue_acc = 0 [L578] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] tmp = isHighWaterSensorDry() [L748] COND FALSE !(\read(tmp)) [L751] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L753] retValue_acc = tmp___0 [L754] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L630] tmp = isHighWaterLevel() [L632] COND TRUE \read(tmp) [L659] int tmp ; [L684] int retValue_acc ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L688] retValue_acc = isMethaneLevelCritical() [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L663] tmp = isMethaneAlarm() [L665] COND FALSE !(\read(tmp)) [L653] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L903] int tmp ; [L904] int tmp___0 ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp = isMethaneLevelCritical() [L910] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L520] COND FALSE !(\read(methaneLevelCritical)) [L523] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L596] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L496] COND TRUE waterLevel > 0 [L497] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L603] COND TRUE \read(systemActive) [L625] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L628] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L903] int tmp ; [L904] int tmp___0 ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp = isMethaneLevelCritical() [L910] COND TRUE \read(tmp) [L695] int retValue_acc ; [L698] retValue_acc = pumpRunning [L699] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L912] tmp___0 = isPumpRunning() [L914] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L897] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 897]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 897]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 801 SDtfs, 1130 SDslu, 1904 SDs, 0 SdLazy, 231 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 549 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=9, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 904 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 927 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2056 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:02:17,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66627aef-a8d4-45c0-b951-8034cda943c5/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