./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE --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 e58738f03c291d912b42eb65343509a99f93ac40ab295d49133dc12600f622b8 ............................................................................................................................................ 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_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE --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 e58738f03c291d912b42eb65343509a99f93ac40ab295d49133dc12600f622b8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-24 11:11:24,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:11:24,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:11:24,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:11:24,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:11:24,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:11:24,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:11:24,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:11:24,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:11:24,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:11:24,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:11:24,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:11:24,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:11:24,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:11:24,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:11:24,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:11:24,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:11:24,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:11:24,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:11:24,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:11:24,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:11:24,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:11:24,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:11:24,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:11:24,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:11:24,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:11:24,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:11:24,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:11:24,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:11:24,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:11:24,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:11:24,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:11:24,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:11:24,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:11:24,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:11:24,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:11:24,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:11:24,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:11:24,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:11:24,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:11:24,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:11:24,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:11:24,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:11:24,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:11:24,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:11:24,497 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:11:24,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:11:24,497 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:11:24,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:11:24,497 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:11:24,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:11:24,498 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:11:24,498 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:11:24,498 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:11:24,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:11:24,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:11:24,499 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:11:24,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:11:24,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:11:24,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:11:24,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:11:24,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:11:24,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:11:24,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:11:24,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:11:24,506 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:11:24,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:11:24,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:11:24,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:11:24,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:11:24,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:11:24,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:11:24,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:11:24,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:11:24,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:11:24,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:11:24,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:11:24,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:11:24,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:11:24,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:11:24,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:11:24,512 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_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e58738f03c291d912b42eb65343509a99f93ac40ab295d49133dc12600f622b8 [2021-10-24 11:11:24,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:11:24,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:11:24,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:11:24,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:11:24,862 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:11:24,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2021-10-24 11:11:24,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/3817b38ca/5eb0f361fafd41c6bb066e97b8714b34/FLAG86d3d3696 [2021-10-24 11:11:25,461 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:11:25,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2021-10-24 11:11:25,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/3817b38ca/5eb0f361fafd41c6bb066e97b8714b34/FLAG86d3d3696 [2021-10-24 11:11:25,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/3817b38ca/5eb0f361fafd41c6bb066e97b8714b34 [2021-10-24 11:11:25,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:11:25,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:11:25,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:11:25,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:11:25,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:11:25,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:25" (1/1) ... [2021-10-24 11:11:25,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56153282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:25, skipping insertion in model container [2021-10-24 11:11:25,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:25" (1/1) ... [2021-10-24 11:11:25,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:11:25,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:11:26,068 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_183a4a13-b689-4de6-bf5f-05313738c40a/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c[7390,7403] [2021-10-24 11:11:26,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:11:26,137 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) [2021-10-24 11:11:26,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b7ca0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:26, skipping insertion in model container [2021-10-24 11:11:26,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:11:26,138 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 11:11:26,140 INFO L168 Benchmark]: Toolchain (without parser) took 367.32 ms. Allocated memory is still 119.5 MB. Free memory was 86.3 MB in the beginning and 93.4 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:26,141 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 83.9 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:11:26,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.73 ms. Allocated memory is still 119.5 MB. Free memory was 86.1 MB in the beginning and 93.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:26,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 83.9 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.73 ms. Allocated memory is still 119.5 MB. Free memory was 86.1 MB in the beginning and 93.5 MB in the end (delta: -7.4 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: 533]: 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-e943c26 [2021-10-24 11:11:28,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:11:28,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:11:28,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:11:28,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:11:28,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:11:28,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:11:28,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:11:28,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:11:28,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:11:28,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:11:28,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:11:28,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:11:28,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:11:28,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:11:28,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:11:28,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:11:28,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:11:28,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:11:28,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:11:28,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:11:28,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:11:28,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:11:28,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:11:28,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:11:28,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:11:28,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:11:28,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:11:28,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:11:28,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:11:28,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:11:28,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:11:28,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:11:28,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:11:28,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:11:28,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:11:28,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:11:28,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:11:28,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:11:28,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:11:28,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:11:28,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 11:11:28,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:11:28,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:11:28,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:11:28,418 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:11:28,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:11:28,418 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:11:28,418 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:11:28,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:11:28,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:11:28,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:11:28,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:11:28,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:11:28,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:11:28,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:11:28,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:11:28,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:11:28,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:11:28,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:11:28,422 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:11:28,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:11:28,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:11:28,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:11:28,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:11:28,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:11:28,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:11:28,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:11:28,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:11:28,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:11:28,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:11:28,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:11:28,425 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:11:28,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:11:28,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:11:28,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:11:28,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:11:28,426 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_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e58738f03c291d912b42eb65343509a99f93ac40ab295d49133dc12600f622b8 [2021-10-24 11:11:28,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:11:28,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:11:28,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:11:28,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:11:28,869 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:11:28,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2021-10-24 11:11:28,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/d514fcfbd/aec8430400d94f129b29d3df89ad12cb/FLAG5caff1d07 [2021-10-24 11:11:29,585 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:11:29,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2021-10-24 11:11:29,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/d514fcfbd/aec8430400d94f129b29d3df89ad12cb/FLAG5caff1d07 [2021-10-24 11:11:29,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/data/d514fcfbd/aec8430400d94f129b29d3df89ad12cb [2021-10-24 11:11:29,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:11:29,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:11:29,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:11:29,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:11:29,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:11:29,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:29" (1/1) ... [2021-10-24 11:11:29,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210a2cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:29, skipping insertion in model container [2021-10-24 11:11:29,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:11:29" (1/1) ... [2021-10-24 11:11:29,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:11:29,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:11:30,246 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_183a4a13-b689-4de6-bf5f-05313738c40a/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c[7390,7403] [2021-10-24 11:11:30,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:11:30,371 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 11:11:30,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:11:30,424 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_183a4a13-b689-4de6-bf5f-05313738c40a/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c[7390,7403] [2021-10-24 11:11:30,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:11:30,501 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:11:30,549 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_183a4a13-b689-4de6-bf5f-05313738c40a/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c[7390,7403] [2021-10-24 11:11:30,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:11:30,611 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:11:30,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30 WrapperNode [2021-10-24 11:11:30,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:11:30,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:11:30,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:11:30,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:11:30,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:11:30,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:11:30,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:11:30,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:11:30,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:11:30,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:11:30,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:11:30,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:11:30,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (1/1) ... [2021-10-24 11:11:30,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:11:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:11:30,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:11:30,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:11:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:11:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:11:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:11:30,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:11:32,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:11:32,916 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-10-24 11:11:32,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:32 BoogieIcfgContainer [2021-10-24 11:11:32,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:11:32,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:11:32,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:11:32,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:11:32,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:11:29" (1/3) ... [2021-10-24 11:11:32,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4723b611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:11:32, skipping insertion in model container [2021-10-24 11:11:32,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:11:30" (2/3) ... [2021-10-24 11:11:32,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4723b611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:11:32, skipping insertion in model container [2021-10-24 11:11:32,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:32" (3/3) ... [2021-10-24 11:11:32,925 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2021-10-24 11:11:32,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:11:32,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 11:11:32,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:11:32,983 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 11:11:32,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 11:11:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 112 states have internal predecessors, (171), 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) [2021-10-24 11:11:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 11:11:33,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:33,023 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:11:33,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2074315904, now seen corresponding path program 1 times [2021-10-24 11:11:33,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:33,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50335129] [2021-10-24 11:11:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:33,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:33,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:33,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:11:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:33,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 11:11:33,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:33,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:33,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:33,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50335129] [2021-10-24 11:11:33,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50335129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:33,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:33,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 11:11:33,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823214885] [2021-10-24 11:11:33,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 11:11:33,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:33,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 11:11:33,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:11:33,473 INFO L87 Difference]: Start difference. First operand has 113 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 112 states have internal predecessors, (171), 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) [2021-10-24 11:11:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:33,522 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2021-10-24 11:11:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 11:11:33,524 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 [2021-10-24 11:11:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:33,536 INFO L225 Difference]: With dead ends: 220 [2021-10-24 11:11:33,536 INFO L226 Difference]: Without dead ends: 109 [2021-10-24 11:11:33,540 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 [2021-10-24 11:11:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-24 11:11:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-24 11:11:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.5) internal successors, (159), 108 states have internal predecessors, (159), 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) [2021-10-24 11:11:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2021-10-24 11:11:33,595 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2021-10-24 11:11:33,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:33,595 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2021-10-24 11:11:33,596 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) [2021-10-24 11:11:33,597 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2021-10-24 11:11:33,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 11:11:33,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:33,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:11:33,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:33,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:33,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:33,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1027559007, now seen corresponding path program 1 times [2021-10-24 11:11:33,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:33,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534298057] [2021-10-24 11:11:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:33,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:33,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:33,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:11:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:33,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:11:33,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:34,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:34,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:34,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534298057] [2021-10-24 11:11:34,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534298057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:34,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:34,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:11:34,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897603736] [2021-10-24 11:11:34,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:11:34,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:34,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:11:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:11:34,144 INFO L87 Difference]: Start difference. First operand 109 states and 159 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) [2021-10-24 11:11:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:34,172 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2021-10-24 11:11:34,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:11:34,173 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 [2021-10-24 11:11:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:34,175 INFO L225 Difference]: With dead ends: 109 [2021-10-24 11:11:34,175 INFO L226 Difference]: Without dead ends: 47 [2021-10-24 11:11:34,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:11:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-24 11:11:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-24 11:11:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 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) [2021-10-24 11:11:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-10-24 11:11:34,189 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-10-24 11:11:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:34,189 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-10-24 11:11:34,190 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) [2021-10-24 11:11:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-10-24 11:11:34,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 11:11:34,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:34,196 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] [2021-10-24 11:11:34,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:34,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:34,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:34,408 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2021-10-24 11:11:34,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:34,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230697973] [2021-10-24 11:11:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:34,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:34,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:34,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:34,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 11:11:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:34,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:11:34,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:34,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:34,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:34,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230697973] [2021-10-24 11:11:34,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230697973] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:34,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:34,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:11:34,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491205096] [2021-10-24 11:11:34,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:11:34,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:11:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:11:34,752 INFO L87 Difference]: Start difference. First operand 47 states and 68 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) [2021-10-24 11:11:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:34,819 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2021-10-24 11:11:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:11:34,820 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 [2021-10-24 11:11:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:34,822 INFO L225 Difference]: With dead ends: 152 [2021-10-24 11:11:34,824 INFO L226 Difference]: Without dead ends: 111 [2021-10-24 11:11:34,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:11:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-24 11:11:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2021-10-24 11:11:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 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) [2021-10-24 11:11:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2021-10-24 11:11:34,835 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2021-10-24 11:11:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:34,836 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2021-10-24 11:11:34,836 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) [2021-10-24 11:11:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2021-10-24 11:11:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 11:11:34,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:34,838 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] [2021-10-24 11:11:34,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:35,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:35,050 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2021-10-24 11:11:35,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:35,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533057073] [2021-10-24 11:11:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:35,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:35,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:35,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:35,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 11:11:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:35,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:11:35,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:35,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:35,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:35,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533057073] [2021-10-24 11:11:35,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533057073] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:35,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:35,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:11:35,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049261235] [2021-10-24 11:11:35,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:11:35,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:35,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:11:35,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:11:35,375 INFO L87 Difference]: Start difference. First operand 66 states and 97 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) [2021-10-24 11:11:35,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:35,434 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2021-10-24 11:11:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:11:35,435 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 [2021-10-24 11:11:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:35,436 INFO L225 Difference]: With dead ends: 147 [2021-10-24 11:11:35,436 INFO L226 Difference]: Without dead ends: 87 [2021-10-24 11:11:35,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:11:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-24 11:11:35,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-10-24 11:11:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 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) [2021-10-24 11:11:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2021-10-24 11:11:35,449 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2021-10-24 11:11:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:35,450 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2021-10-24 11:11:35,450 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) [2021-10-24 11:11:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2021-10-24 11:11:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 11:11:35,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:35,451 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] [2021-10-24 11:11:35,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:35,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:35,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:35,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2021-10-24 11:11:35,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:35,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289576219] [2021-10-24 11:11:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:35,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:35,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:35,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:35,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 11:11:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:35,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:11:35,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:35,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:36,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:36,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289576219] [2021-10-24 11:11:36,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289576219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:36,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:36,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 11:11:36,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967554187] [2021-10-24 11:11:36,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:11:36,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:11:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:11:36,064 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand has 5 states, 5 states have (on average 5.0) 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) [2021-10-24 11:11:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:36,174 INFO L93 Difference]: Finished difference Result 413 states and 601 transitions. [2021-10-24 11:11:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 11:11:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) 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 25 [2021-10-24 11:11:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:36,177 INFO L225 Difference]: With dead ends: 413 [2021-10-24 11:11:36,177 INFO L226 Difference]: Without dead ends: 334 [2021-10-24 11:11:36,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 11:11:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-10-24 11:11:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 156. [2021-10-24 11:11:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4193548387096775) internal successors, (220), 155 states have internal predecessors, (220), 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) [2021-10-24 11:11:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 220 transitions. [2021-10-24 11:11:36,201 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 220 transitions. Word has length 25 [2021-10-24 11:11:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:36,202 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 220 transitions. [2021-10-24 11:11:36,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) 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) [2021-10-24 11:11:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 220 transitions. [2021-10-24 11:11:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 11:11:36,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:36,203 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] [2021-10-24 11:11:36,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:36,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:36,421 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:36,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:36,421 INFO L82 PathProgramCache]: Analyzing trace with hash -649570909, now seen corresponding path program 1 times [2021-10-24 11:11:36,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:36,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337848274] [2021-10-24 11:11:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:36,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:36,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:36,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 11:11:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:36,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:11:36,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:36,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:36,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:36,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337848274] [2021-10-24 11:11:36,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337848274] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:36,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:36,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 11:11:36,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855651744] [2021-10-24 11:11:36,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:11:36,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:36,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:11:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:11:36,796 INFO L87 Difference]: Start difference. First operand 156 states and 220 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-10-24 11:11:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:36,978 INFO L93 Difference]: Finished difference Result 436 states and 619 transitions. [2021-10-24 11:11:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 11:11:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-10-24 11:11:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:36,982 INFO L225 Difference]: With dead ends: 436 [2021-10-24 11:11:36,982 INFO L226 Difference]: Without dead ends: 434 [2021-10-24 11:11:36,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 11:11:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-10-24 11:11:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 156. [2021-10-24 11:11:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4064516129032258) internal successors, (218), 155 states have internal predecessors, (218), 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) [2021-10-24 11:11:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2021-10-24 11:11:37,010 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 26 [2021-10-24 11:11:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:37,011 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2021-10-24 11:11:37,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-10-24 11:11:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2021-10-24 11:11:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 11:11:37,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:37,013 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] [2021-10-24 11:11:37,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:37,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:37,228 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:37,229 INFO L82 PathProgramCache]: Analyzing trace with hash 108971892, now seen corresponding path program 1 times [2021-10-24 11:11:37,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:37,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978917497] [2021-10-24 11:11:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:37,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:37,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:37,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:37,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 11:11:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:37,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 11:11:37,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:37,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:37,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:37,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978917497] [2021-10-24 11:11:37,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978917497] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:37,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:37,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 11:11:37,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862710988] [2021-10-24 11:11:37,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 11:11:37,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 11:11:37,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:11:37,638 INFO L87 Difference]: Start difference. First operand 156 states and 218 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) [2021-10-24 11:11:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:37,732 INFO L93 Difference]: Finished difference Result 468 states and 648 transitions. [2021-10-24 11:11:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 11:11:37,733 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 [2021-10-24 11:11:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:37,735 INFO L225 Difference]: With dead ends: 468 [2021-10-24 11:11:37,736 INFO L226 Difference]: Without dead ends: 318 [2021-10-24 11:11:37,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 11:11:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-24 11:11:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 168. [2021-10-24 11:11:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.377245508982036) internal successors, (230), 167 states have internal predecessors, (230), 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) [2021-10-24 11:11:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 230 transitions. [2021-10-24 11:11:37,764 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 230 transitions. Word has length 31 [2021-10-24 11:11:37,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:37,765 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 230 transitions. [2021-10-24 11:11:37,766 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) [2021-10-24 11:11:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 230 transitions. [2021-10-24 11:11:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 11:11:37,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:37,772 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] [2021-10-24 11:11:37,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:37,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:37,994 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:37,995 INFO L82 PathProgramCache]: Analyzing trace with hash -284055118, now seen corresponding path program 1 times [2021-10-24 11:11:37,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:37,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317450578] [2021-10-24 11:11:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:37,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:37,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:37,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 11:11:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:38,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 11:11:38,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:38,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:38,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:38,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317450578] [2021-10-24 11:11:38,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317450578] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:38,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:38,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 11:11:38,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417073036] [2021-10-24 11:11:38,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 11:11:38,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:38,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 11:11:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 11:11:38,367 INFO L87 Difference]: Start difference. First operand 168 states and 230 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) [2021-10-24 11:11:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:38,452 INFO L93 Difference]: Finished difference Result 502 states and 682 transitions. [2021-10-24 11:11:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:11:38,453 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 [2021-10-24 11:11:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:38,455 INFO L225 Difference]: With dead ends: 502 [2021-10-24 11:11:38,455 INFO L226 Difference]: Without dead ends: 340 [2021-10-24 11:11:38,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 11:11:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-24 11:11:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 176. [2021-10-24 11:11:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.36) internal successors, (238), 175 states have internal predecessors, (238), 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) [2021-10-24 11:11:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2021-10-24 11:11:38,483 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 31 [2021-10-24 11:11:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:38,483 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2021-10-24 11:11:38,484 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) [2021-10-24 11:11:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2021-10-24 11:11:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 11:11:38,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:38,485 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] [2021-10-24 11:11:38,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:38,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:38,700 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:38,700 INFO L82 PathProgramCache]: Analyzing trace with hash -25889680, now seen corresponding path program 1 times [2021-10-24 11:11:38,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:38,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105680889] [2021-10-24 11:11:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:38,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:38,702 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:38,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 11:11:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:11:38,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:11:38,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:39,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:39,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:39,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105680889] [2021-10-24 11:11:39,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105680889] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:39,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:39,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 11:11:39,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215595940] [2021-10-24 11:11:39,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:11:39,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:11:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:11:39,189 INFO L87 Difference]: Start difference. First operand 176 states and 238 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) [2021-10-24 11:11:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:11:39,267 INFO L93 Difference]: Finished difference Result 576 states and 782 transitions. [2021-10-24 11:11:39,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:11:39,268 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 [2021-10-24 11:11:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:11:39,270 INFO L225 Difference]: With dead ends: 576 [2021-10-24 11:11:39,270 INFO L226 Difference]: Without dead ends: 406 [2021-10-24 11:11:39,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:11:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-10-24 11:11:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 316. [2021-10-24 11:11:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.3428571428571427) internal successors, (423), 315 states have internal predecessors, (423), 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) [2021-10-24 11:11:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 423 transitions. [2021-10-24 11:11:39,311 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 423 transitions. Word has length 31 [2021-10-24 11:11:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:11:39,311 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 423 transitions. [2021-10-24 11:11:39,312 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) [2021-10-24 11:11:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 423 transitions. [2021-10-24 11:11:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 11:11:39,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:11:39,313 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] [2021-10-24 11:11:39,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:39,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:39,528 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:11:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:11:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2138649550, now seen corresponding path program 1 times [2021-10-24 11:11:39,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:11:39,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116395989] [2021-10-24 11:11:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:11:39,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:11:39,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:11:39,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:11:39,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 11:11:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:11:40,897 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:11:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:11:42,164 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 11:11:42,165 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:11:42,166 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:11:42,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:11:42,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:11:42,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 11:11:42,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:11:42,390 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:11:42,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:11:42 BoogieIcfgContainer [2021-10-24 11:11:42,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:11:42,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:11:42,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:11:42,515 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:11:42,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:11:32" (3/4) ... [2021-10-24 11:11:42,517 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 11:11:42,600 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:11:42,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:11:42,601 INFO L168 Benchmark]: Toolchain (without parser) took 12742.43 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 50.6 MB in the beginning and 46.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 43.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:42,602 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:11:42,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.88 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 37.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:42,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.52 ms. Allocated memory is still 69.2 MB. Free memory was 37.0 MB in the beginning and 33.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:42,603 INFO L168 Benchmark]: Boogie Preprocessor took 68.58 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 33.5 MB in the beginning and 67.1 MB in the end (delta: -33.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:42,603 INFO L168 Benchmark]: RCFGBuilder took 2138.04 ms. Allocated memory is still 86.0 MB. Free memory was 67.1 MB in the beginning and 39.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:42,604 INFO L168 Benchmark]: TraceAbstraction took 9594.35 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 39.7 MB in the beginning and 59.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:42,604 INFO L168 Benchmark]: Witness Printer took 85.72 ms. Allocated memory is still 109.1 MB. Free memory was 59.3 MB in the beginning and 46.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:11:42,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 750.88 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 37.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.52 ms. Allocated memory is still 69.2 MB. Free memory was 37.0 MB in the beginning and 33.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.58 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 33.5 MB in the beginning and 67.1 MB in the end (delta: -33.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2138.04 ms. Allocated memory is still 86.0 MB. Free memory was 67.1 MB in the beginning and 39.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9594.35 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 39.7 MB in the beginning and 59.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 85.72 ms. Allocated memory is still 109.1 MB. Free memory was 59.3 MB in the beginning and 46.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 500]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L61] int pumpRunning = 0; [L62] int systemActive = 1; [L362] int cleanupTimeShifts = 4; [L674] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L872] int waterLevel = 1; [L873] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L438] int retValue_acc ; [L439] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L445] tmp = valid_product() [L447] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L267] int splverifierCounter ; [L268] int tmp ; [L269] int tmp___0 ; [L270] int tmp___1 ; [L271] int tmp___2 ; [L274] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L276] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L278] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L284] tmp = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L890] COND TRUE waterLevel < 2 [L891] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L294] tmp___0 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] COND FALSE !(\read(methaneLevelCritical)) [L905] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L304] tmp___2 = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp___2) [L258] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L69] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L76] COND TRUE \read(systemActive) [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L127] COND FALSE !(\read(pumpRunning)) [L98] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L101] COND TRUE ! pumpRunning [L221] int retValue_acc ; [L222] int tmp ; [L223] int tmp___0 ; [L952] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L955] COND FALSE !(waterLevel < 2) [L959] retValue_acc = 0 [L960] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L227] tmp = isHighWaterSensorDry() [L229] COND FALSE !(\read(tmp)) [L232] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L234] retValue_acc = tmp___0 [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L103] tmp = isHighWaterLevel() [L105] COND TRUE \read(tmp) [L152] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L337] int tmp ; [L338] int tmp___0 ; [L911] int retValue_acc ; [L914] retValue_acc = methaneLevelCritical [L915] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L342] tmp = isMethaneLevelCritical() [L344] COND TRUE \read(tmp) [L176] int retValue_acc ; [L179] retValue_acc = pumpRunning [L180] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L346] tmp___0 = isPumpRunning() [L348] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L500] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 500]: 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: 500]: 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, 113 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9412.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 36.6ms, AutomataDifference: 839.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 844 SDtfs, 1121 SDslu, 1344 SDs, 0 SdLazy, 170 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 260.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 187.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=9, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 217.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 907 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 196.2ms SsaConstructionTime, 2134.5ms SatisfiabilityAnalysisTime, 1503.5ms InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 672 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1815 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! [2021-10-24 11:11:42,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_183a4a13-b689-4de6-bf5f-05313738c40a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...