./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8 --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 1793ccd9e2f375623df96533ad239f61347f357b ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8 --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 1793ccd9e2f375623df96533ad239f61347f357b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:14:05,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:14:05,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:14:05,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:14:05,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:14:05,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:14:05,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:14:05,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:14:05,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:14:05,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:14:05,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:14:05,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:14:05,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:14:05,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:14:05,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:14:05,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:14:05,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:14:05,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:14:05,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:14:05,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:14:05,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:14:05,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:14:05,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:14:05,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:14:05,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:14:05,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:14:05,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:14:05,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:14:05,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:14:05,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:14:05,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:14:05,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:14:05,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:14:05,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:14:05,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:14:05,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:14:05,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:14:05,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:14:05,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:14:05,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:14:05,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:14:05,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:14:05,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:14:05,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:14:05,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:14:05,422 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:14:05,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:14:05,422 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:14:05,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:14:05,423 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:14:05,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:14:05,423 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:14:05,423 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:14:05,424 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:14:05,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:14:05,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:14:05,424 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:14:05,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:14:05,426 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:14:05,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:14:05,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:14:05,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:14:05,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:14:05,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:14:05,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:14:05,427 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:14:05,427 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:14:05,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:14:05,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:14:05,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:14:05,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:14:05,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:14:05,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:14:05,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:14:05,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:14:05,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:14:05,429 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:14:05,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:14:05,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:14:05,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:14:05,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:14:05,430 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_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1793ccd9e2f375623df96533ad239f61347f357b [2021-10-13 08:14:05,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:14:05,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:14:05,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:14:05,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:14:05,749 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:14:05,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-10-13 08:14:05,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/8b3179bb4/a6f71255fc544f84b6eac7e8c0ec7613/FLAG80f09f2bb [2021-10-13 08:14:06,458 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:14:06,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-10-13 08:14:06,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/8b3179bb4/a6f71255fc544f84b6eac7e8c0ec7613/FLAG80f09f2bb [2021-10-13 08:14:06,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/8b3179bb4/a6f71255fc544f84b6eac7e8c0ec7613 [2021-10-13 08:14:06,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:14:06,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:14:06,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:14:06,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:14:06,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:14:06,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:06" (1/1) ... [2021-10-13 08:14:06,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b05c64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:06, skipping insertion in model container [2021-10-13 08:14:06,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:06" (1/1) ... [2021-10-13 08:14:06,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:14:06,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:14:07,299 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_8879bd15-49cf-413c-92ee-717dd3f1fe16/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16515,16528] [2021-10-13 08:14:07,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:14:07,326 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 08:14:07,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24969f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:07, skipping insertion in model container [2021-10-13 08:14:07,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:14:07,328 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 08:14:07,331 INFO L168 Benchmark]: Toolchain (without parser) took 596.65 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 57.7 MB in the beginning and 83.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:07,331 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:14:07,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.37 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 57.5 MB in the beginning and 83.6 MB in the end (delta: -26.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:07,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 590.37 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 57.5 MB in the beginning and 83.6 MB in the end (delta: -26.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 238]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:14:09,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:14:09,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:14:09,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:14:09,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:14:09,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:14:09,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:14:09,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:14:09,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:14:09,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:14:09,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:14:09,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:14:09,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:14:09,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:14:09,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:14:09,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:14:09,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:14:09,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:14:09,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:14:10,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:14:10,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:14:10,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:14:10,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:14:10,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:14:10,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:14:10,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:14:10,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:14:10,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:14:10,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:14:10,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:14:10,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:14:10,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:14:10,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:14:10,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:14:10,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:14:10,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:14:10,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:14:10,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:14:10,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:14:10,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:14:10,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:14:10,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:14:10,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:14:10,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:14:10,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:14:10,060 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:14:10,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:14:10,060 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:14:10,060 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:14:10,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:14:10,061 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:14:10,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:14:10,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:14:10,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:14:10,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:14:10,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:14:10,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:14:10,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:14:10,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:14:10,065 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:14:10,065 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:14:10,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:14:10,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:14:10,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:14:10,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:14:10,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:14:10,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:14:10,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:14:10,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:14:10,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:14:10,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:14:10,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:14:10,069 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:14:10,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:14:10,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:14:10,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:14:10,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:14:10,070 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_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1793ccd9e2f375623df96533ad239f61347f357b [2021-10-13 08:14:10,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:14:10,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:14:10,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:14:10,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:14:10,538 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:14:10,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-10-13 08:14:10,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/8452d8efa/e264988685444fa686c2dfd52990175b/FLAGbc6e95059 [2021-10-13 08:14:11,416 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:14:11,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2021-10-13 08:14:11,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/8452d8efa/e264988685444fa686c2dfd52990175b/FLAGbc6e95059 [2021-10-13 08:14:11,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/data/8452d8efa/e264988685444fa686c2dfd52990175b [2021-10-13 08:14:11,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:14:11,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:14:11,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:14:11,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:14:11,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:14:11,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:11" (1/1) ... [2021-10-13 08:14:11,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4ae570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:11, skipping insertion in model container [2021-10-13 08:14:11,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:11" (1/1) ... [2021-10-13 08:14:11,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:14:11,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:14:12,286 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_8879bd15-49cf-413c-92ee-717dd3f1fe16/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16515,16528] [2021-10-13 08:14:12,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:14:12,345 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 08:14:12,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:14:12,487 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_8879bd15-49cf-413c-92ee-717dd3f1fe16/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16515,16528] [2021-10-13 08:14:12,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:14:12,519 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:14:12,574 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_8879bd15-49cf-413c-92ee-717dd3f1fe16/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16515,16528] [2021-10-13 08:14:12,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:14:12,604 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:14:12,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12 WrapperNode [2021-10-13 08:14:12,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:14:12,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:14:12,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:14:12,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:14:12,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:14:12,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:14:12,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:14:12,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:14:12,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:14:12,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:14:12,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:14:12,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:14:12,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (1/1) ... [2021-10-13 08:14:12,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:14:12,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:14:12,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:14:12,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:14:12,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:14:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:14:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:14:12,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:14:15,707 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:14:15,708 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2021-10-13 08:14:15,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:14:15 BoogieIcfgContainer [2021-10-13 08:14:15,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:14:15,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:14:15,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:14:15,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:14:15,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:14:11" (1/3) ... [2021-10-13 08:14:15,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3064d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:14:15, skipping insertion in model container [2021-10-13 08:14:15,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:12" (2/3) ... [2021-10-13 08:14:15,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3064d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:14:15, skipping insertion in model container [2021-10-13 08:14:15,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:14:15" (3/3) ... [2021-10-13 08:14:15,721 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2021-10-13 08:14:15,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:14:15,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 08:14:15,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:14:15,793 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:14:15,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 08:14:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 110 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:14:15,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:15,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:15,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:15,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1529342393, now seen corresponding path program 1 times [2021-10-13 08:14:15,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:15,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697974152] [2021-10-13 08:14:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:15,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:15,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:15,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:14:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:16,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:14:16,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:16,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:16,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:16,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697974152] [2021-10-13 08:14:16,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697974152] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:16,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:16,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:14:16,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119216197] [2021-10-13 08:14:16,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:14:16,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:14:16,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:14:16,315 INFO L87 Difference]: Start difference. First operand has 111 states, 107 states have (on average 1.5700934579439252) internal successors, (168), 110 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:16,350 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2021-10-13 08:14:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:14:16,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 08:14:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:16,364 INFO L225 Difference]: With dead ends: 216 [2021-10-13 08:14:16,365 INFO L226 Difference]: Without dead ends: 107 [2021-10-13 08:14:16,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:14:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-13 08:14:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-10-13 08:14:16,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.5) internal successors, (156), 106 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2021-10-13 08:14:16,420 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2021-10-13 08:14:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:16,421 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2021-10-13 08:14:16,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2021-10-13 08:14:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 08:14:16,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:16,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:16,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 08:14:16,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:16,653 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:16,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1945506518, now seen corresponding path program 1 times [2021-10-13 08:14:16,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:16,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585770808] [2021-10-13 08:14:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:16,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:16,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:16,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:16,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:14:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:16,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:14:16,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:16,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:17,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:17,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585770808] [2021-10-13 08:14:17,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585770808] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:17,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:17,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:14:17,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945489179] [2021-10-13 08:14:17,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:14:17,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:14:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:14:17,057 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:17,104 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2021-10-13 08:14:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:14:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 08:14:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:17,106 INFO L225 Difference]: With dead ends: 107 [2021-10-13 08:14:17,108 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 08:14:17,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:14:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 08:14:17,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-13 08:14:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2021-10-13 08:14:17,123 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2021-10-13 08:14:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:17,124 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2021-10-13 08:14:17,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:17,125 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2021-10-13 08:14:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:14:17,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:17,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:17,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:17,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:17,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:17,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:17,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1939738244, now seen corresponding path program 1 times [2021-10-13 08:14:17,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:17,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154591180] [2021-10-13 08:14:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:17,362 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:17,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:17,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:17,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:14:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:17,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:14:17,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:17,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:17,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:17,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154591180] [2021-10-13 08:14:17,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154591180] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:17,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:17,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:14:17,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571283621] [2021-10-13 08:14:17,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:14:17,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:14:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:14:17,822 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:17,870 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2021-10-13 08:14:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:14:17,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 08:14:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:17,874 INFO L225 Difference]: With dead ends: 84 [2021-10-13 08:14:17,875 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 08:14:17,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:14:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 08:14:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-13 08:14:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 44 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2021-10-13 08:14:17,889 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2021-10-13 08:14:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:17,889 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2021-10-13 08:14:17,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2021-10-13 08:14:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:14:17,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:17,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:17,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:18,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:18,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1547834963, now seen corresponding path program 1 times [2021-10-13 08:14:18,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:18,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251457841] [2021-10-13 08:14:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:18,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:18,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:18,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:18,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:14:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:18,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:14:18,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:18,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:18,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:18,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251457841] [2021-10-13 08:14:18,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251457841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:18,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:18,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:14:18,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813044067] [2021-10-13 08:14:18,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:14:18,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:14:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:14:18,582 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:18,655 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2021-10-13 08:14:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:14:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 08:14:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:18,658 INFO L225 Difference]: With dead ends: 105 [2021-10-13 08:14:18,658 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 08:14:18,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:14:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 08:14:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-13 08:14:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2021-10-13 08:14:18,673 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2021-10-13 08:14:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:18,673 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2021-10-13 08:14:18,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2021-10-13 08:14:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:14:18,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:18,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:18,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:18,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:18,893 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:18,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1827782978, now seen corresponding path program 1 times [2021-10-13 08:14:18,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:18,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067477128] [2021-10-13 08:14:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:18,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:18,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:18,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:18,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:14:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:19,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:14:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:19,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:19,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:19,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067477128] [2021-10-13 08:14:19,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067477128] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:19,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:19,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:14:19,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999150985] [2021-10-13 08:14:19,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:14:19,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:14:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:14:19,359 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:19,441 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2021-10-13 08:14:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:14:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 08:14:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:19,444 INFO L225 Difference]: With dead ends: 171 [2021-10-13 08:14:19,444 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 08:14:19,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:14:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 08:14:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2021-10-13 08:14:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2021-10-13 08:14:19,456 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2021-10-13 08:14:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:19,457 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2021-10-13 08:14:19,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2021-10-13 08:14:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:14:19,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:19,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:19,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 08:14:19,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:19,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash 834728065, now seen corresponding path program 1 times [2021-10-13 08:14:19,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:19,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122091225] [2021-10-13 08:14:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:19,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:19,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:19,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:19,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:14:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:19,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:14:19,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:20,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:20,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:20,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122091225] [2021-10-13 08:14:20,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122091225] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:20,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:20,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 08:14:20,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894190304] [2021-10-13 08:14:20,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:14:20,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:14:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:14:20,250 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:20,379 INFO L93 Difference]: Finished difference Result 344 states and 483 transitions. [2021-10-13 08:14:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:14:20,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 08:14:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:20,382 INFO L225 Difference]: With dead ends: 344 [2021-10-13 08:14:20,382 INFO L226 Difference]: Without dead ends: 280 [2021-10-13 08:14:20,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:14:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-13 08:14:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 128. [2021-10-13 08:14:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3779527559055118) internal successors, (175), 127 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2021-10-13 08:14:20,406 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 30 [2021-10-13 08:14:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:20,406 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2021-10-13 08:14:20,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2021-10-13 08:14:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 08:14:20,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:20,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:20,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:20,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:20,623 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:20,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:20,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1506496567, now seen corresponding path program 1 times [2021-10-13 08:14:20,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:20,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589464030] [2021-10-13 08:14:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:20,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:20,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:20,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:20,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:14:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:20,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:14:20,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:21,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:21,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:21,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589464030] [2021-10-13 08:14:21,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589464030] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:21,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:21,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:14:21,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27622409] [2021-10-13 08:14:21,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:14:21,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:21,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:14:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:14:21,202 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:21,390 INFO L93 Difference]: Finished difference Result 366 states and 502 transitions. [2021-10-13 08:14:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:14:21,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 08:14:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:21,394 INFO L225 Difference]: With dead ends: 366 [2021-10-13 08:14:21,395 INFO L226 Difference]: Without dead ends: 364 [2021-10-13 08:14:21,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:14:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-13 08:14:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 128. [2021-10-13 08:14:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3700787401574803) internal successors, (174), 127 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2021-10-13 08:14:21,417 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 31 [2021-10-13 08:14:21,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:21,418 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2021-10-13 08:14:21,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2021-10-13 08:14:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 08:14:21,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:21,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:21,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:21,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:21,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1549041486, now seen corresponding path program 1 times [2021-10-13 08:14:21,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:21,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077293341] [2021-10-13 08:14:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:21,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:21,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:21,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:21,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:14:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:21,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:14:22,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:22,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:22,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:22,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077293341] [2021-10-13 08:14:22,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077293341] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:22,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:22,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 08:14:22,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833195180] [2021-10-13 08:14:22,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:14:22,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:14:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:14:22,209 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:22,288 INFO L93 Difference]: Finished difference Result 346 states and 466 transitions. [2021-10-13 08:14:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:14:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 08:14:22,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:22,291 INFO L225 Difference]: With dead ends: 346 [2021-10-13 08:14:22,291 INFO L226 Difference]: Without dead ends: 224 [2021-10-13 08:14:22,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:14:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-13 08:14:22,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2021-10-13 08:14:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.348148148148148) internal successors, (182), 135 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2021-10-13 08:14:22,312 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 31 [2021-10-13 08:14:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:22,312 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2021-10-13 08:14:22,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2021-10-13 08:14:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 08:14:22,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:22,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:22,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:22,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:22,539 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1290876048, now seen corresponding path program 1 times [2021-10-13 08:14:22,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:22,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172248992] [2021-10-13 08:14:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:22,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:22,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:22,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:22,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 08:14:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:14:22,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:14:22,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:14:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:22,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:14:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:14:23,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:14:23,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172248992] [2021-10-13 08:14:23,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172248992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:14:23,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:14:23,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 08:14:23,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192747205] [2021-10-13 08:14:23,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:14:23,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:14:23,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:14:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:14:23,136 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:14:23,217 INFO L93 Difference]: Finished difference Result 418 states and 562 transitions. [2021-10-13 08:14:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:14:23,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 08:14:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:14:23,220 INFO L225 Difference]: With dead ends: 418 [2021-10-13 08:14:23,220 INFO L226 Difference]: Without dead ends: 288 [2021-10-13 08:14:23,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:14:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-13 08:14:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 236. [2021-10-13 08:14:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3319148936170213) internal successors, (313), 235 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 313 transitions. [2021-10-13 08:14:23,265 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 313 transitions. Word has length 31 [2021-10-13 08:14:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:14:23,265 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 313 transitions. [2021-10-13 08:14:23,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:14:23,266 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 313 transitions. [2021-10-13 08:14:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 08:14:23,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:14:23,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:14:23,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:23,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:23,482 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:14:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:14:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash 891331378, now seen corresponding path program 1 times [2021-10-13 08:14:23,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:14:23,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323723097] [2021-10-13 08:14:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:14:23,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:14:23,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:14:23,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:14:23,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:14:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:14:24,825 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:14:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:14:26,662 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:14:26,663 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:14:26,664 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:14:26,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:14:26,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:14:26,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:14:26,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:14:26,896 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:14:27,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:14:27 BoogieIcfgContainer [2021-10-13 08:14:27,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:14:27,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:14:27,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:14:27,062 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:14:27,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:14:15" (3/4) ... [2021-10-13 08:14:27,065 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 08:14:27,219 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:14:27,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:14:27,221 INFO L168 Benchmark]: Toolchain (without parser) took 15538.85 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 46.0 MB in the beginning and 56.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,222 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 67.1 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:14:27,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 920.60 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 34.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.01 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 30.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,224 INFO L168 Benchmark]: Boogie Preprocessor took 67.06 ms. Allocated memory is still 67.1 MB. Free memory was 30.9 MB in the beginning and 28.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,224 INFO L168 Benchmark]: RCFGBuilder took 2952.54 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 28.3 MB in the beginning and 64.0 MB in the end (delta: -35.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,225 INFO L168 Benchmark]: TraceAbstraction took 11347.97 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 28.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,225 INFO L168 Benchmark]: Witness Printer took 157.81 ms. Allocated memory is still 86.0 MB. Free memory was 27.7 MB in the beginning and 56.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:14:27,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 67.1 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 920.60 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 34.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.01 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 30.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.06 ms. Allocated memory is still 67.1 MB. Free memory was 30.9 MB in the beginning and 28.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2952.54 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 28.3 MB in the beginning and 64.0 MB in the end (delta: -35.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11347.97 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 28.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. * Witness Printer took 157.81 ms. Allocated memory is still 86.0 MB. Free memory was 27.7 MB in the beginning and 56.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 9.4 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 839]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L379] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L589] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE \read(systemActive) [L644] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L647] COND FALSE !(\read(pumpRunning)) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND TRUE ! pumpRunning [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L925] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L672] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L185] int tmp ; [L186] int tmp___0 ; [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L190] tmp = isMethaneLevelCritical() [L192] COND TRUE \read(tmp) [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L194] tmp___0 = isPumpRunning() [L196] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L839] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 839]: 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: 839]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11110.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 26.9ms, AutomataDifference: 855.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 797 SDtfs, 956 SDslu, 1168 SDs, 0 SdLazy, 165 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 290.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 204.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 190.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 573 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 249.4ms SsaConstructionTime, 2377.3ms SatisfiabilityAnalysisTime, 2068.3ms InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 446 ConstructedInterpolants, 0 QuantifiedInterpolants, 734 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1831 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 08:14:27,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8879bd15-49cf-413c-92ee-717dd3f1fe16/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...