./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 982cd7c832ad69be85d11abb6d88a1915810e691 ....................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 982cd7c832ad69be85d11abb6d88a1915810e691 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 21:49:56,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:49:56,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:49:56,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:49:56,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:49:56,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:49:56,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:49:56,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:49:56,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:49:56,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:49:56,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:49:56,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:49:56,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:49:56,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:49:56,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:49:56,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:49:56,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:49:56,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:49:56,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:49:56,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:49:56,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:49:56,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:49:56,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:49:56,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:49:56,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:49:56,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:49:56,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:49:56,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:49:56,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:49:56,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:49:56,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:49:56,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:49:56,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:49:56,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:49:56,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:49:56,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:49:56,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:49:56,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:49:56,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:49:56,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:49:56,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:49:56,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:49:56,412 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:49:56,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:49:56,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:49:56,413 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:49:56,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:49:56,413 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:49:56,414 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:49:56,414 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:49:56,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:49:56,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:49:56,414 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:49:56,414 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:49:56,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:49:56,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:49:56,415 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:49:56,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:49:56,416 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:49:56,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:49:56,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:49:56,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:49:56,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:49:56,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:49:56,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:49:56,417 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:49:56,417 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:49:56,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:49:56,417 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:49:56,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:49:56,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:49:56,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:49:56,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:49:56,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:49:56,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:49:56,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:49:56,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:49:56,419 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:49:56,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:49:56,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:49:56,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:49:56,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:49:56,420 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan 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(__VERIFIER_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 -> 982cd7c832ad69be85d11abb6d88a1915810e691 [2019-12-07 21:49:56,531 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:49:56,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:49:56,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:49:56,543 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:49:56,544 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:49:56,544 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-12-07 21:49:56,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/e22c4bba6/c4360f69314340728a9478e988a54a26/FLAG73341acb9 [2019-12-07 21:49:57,028 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:49:57,028 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-12-07 21:49:57,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/e22c4bba6/c4360f69314340728a9478e988a54a26/FLAG73341acb9 [2019-12-07 21:49:57,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/e22c4bba6/c4360f69314340728a9478e988a54a26 [2019-12-07 21:49:57,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:49:57,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:49:57,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:49:57,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:49:57,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:49:57,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:49:57" (1/1) ... [2019-12-07 21:49:57,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66259ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:57, skipping insertion in model container [2019-12-07 21:49:57,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:49:57" (1/1) ... [2019-12-07 21:49:57,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:49:57,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:49:57,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:49:57,315 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) [2019-12-07 21:49:57,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e1c4f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:57, skipping insertion in model container [2019-12-07 21:49:57,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:49:57,316 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 21:49:57,317 INFO L168 Benchmark]: Toolchain (without parser) took 269.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 936.7 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:49:57,318 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:49:57,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:49:57,320 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -168.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 458]: 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 0.1.25-f470102 [2019-12-07 21:49:58,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:49:58,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:49:58,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:49:58,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:49:58,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:49:58,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:49:58,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:49:58,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:49:58,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:49:58,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:49:58,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:49:58,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:49:58,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:49:58,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:49:58,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:49:58,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:49:58,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:49:58,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:49:58,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:49:58,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:49:58,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:49:58,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:49:58,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:49:58,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:49:58,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:49:58,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:49:58,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:49:58,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:49:58,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:49:58,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:49:58,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:49:58,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:49:58,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:49:58,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:49:58,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:49:58,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:49:58,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:49:58,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:49:58,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:49:58,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:49:58,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 21:49:58,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:49:58,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:49:58,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:49:58,505 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:49:58,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:49:58,505 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:49:58,506 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:49:58,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:49:58,506 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:49:58,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:49:58,506 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 21:49:58,507 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 21:49:58,508 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:49:58,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:49:58,508 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:49:58,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:49:58,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:49:58,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 21:49:58,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:49:58,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:49:58,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:49:58,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:49:58,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:49:58,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:49:58,509 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 21:49:58,509 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 21:49:58,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:49:58,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:49:58,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:49:58,510 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan 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(__VERIFIER_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 -> 982cd7c832ad69be85d11abb6d88a1915810e691 [2019-12-07 21:49:58,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:49:58,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:49:58,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:49:58,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:49:58,681 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:49:58,681 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-12-07 21:49:58,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/d4cb4caa1/72195b13f2d24ef09b6d848f6142f407/FLAG093b4c72a [2019-12-07 21:49:59,070 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:49:59,071 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2019-12-07 21:49:59,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/d4cb4caa1/72195b13f2d24ef09b6d848f6142f407/FLAG093b4c72a [2019-12-07 21:49:59,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/data/d4cb4caa1/72195b13f2d24ef09b6d848f6142f407 [2019-12-07 21:49:59,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:49:59,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:49:59,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:49:59,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:49:59,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:49:59,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b70e7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59, skipping insertion in model container [2019-12-07 21:49:59,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:49:59,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:49:59,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:49:59,360 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 21:49:59,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:49:59,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:49:59,409 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:49:59,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:49:59,471 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:49:59,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59 WrapperNode [2019-12-07 21:49:59,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:49:59,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:49:59,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:49:59,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:49:59,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:49:59,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:49:59,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:49:59,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:49:59,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... [2019-12-07 21:49:59,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:49:59,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:49:59,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:49:59,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:49:59,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:49:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:49:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-12-07 21:49:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:49:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:50:00,168 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:50:00,169 INFO L287 CfgBuilder]: Removed 196 assume(true) statements. [2019-12-07 21:50:00,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:50:00 BoogieIcfgContainer [2019-12-07 21:50:00,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:50:00,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:50:00,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:50:00,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:50:00,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:49:59" (1/3) ... [2019-12-07 21:50:00,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f45dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:50:00, skipping insertion in model container [2019-12-07 21:50:00,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:49:59" (2/3) ... [2019-12-07 21:50:00,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f45dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:50:00, skipping insertion in model container [2019-12-07 21:50:00,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:50:00" (3/3) ... [2019-12-07 21:50:00,175 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2019-12-07 21:50:00,182 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:50:00,187 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 21:50:00,195 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 21:50:00,211 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:50:00,212 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:50:00,212 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:50:00,212 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:50:00,212 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:50:00,212 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:50:00,212 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:50:00,212 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:50:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-12-07 21:50:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 21:50:00,229 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:00,229 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:00,230 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:00,233 INFO L82 PathProgramCache]: Analyzing trace with hash -330245923, now seen corresponding path program 1 times [2019-12-07 21:50:00,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:00,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002212344] [2019-12-07 21:50:00,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:00,380 INFO L264 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 21:50:00,384 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:00,395 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:00,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002212344] [2019-12-07 21:50:00,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:50:00,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 21:50:00,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240567310] [2019-12-07 21:50:00,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 21:50:00,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:00,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 21:50:00,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 21:50:00,415 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2019-12-07 21:50:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:00,444 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2019-12-07 21:50:00,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 21:50:00,445 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 21:50:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:00,456 INFO L225 Difference]: With dead ends: 256 [2019-12-07 21:50:00,456 INFO L226 Difference]: Without dead ends: 127 [2019-12-07 21:50:00,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 21:50:00,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-12-07 21:50:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-12-07 21:50:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-12-07 21:50:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2019-12-07 21:50:00,495 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2019-12-07 21:50:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:00,496 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2019-12-07 21:50:00,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 21:50:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2019-12-07 21:50:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 21:50:00,497 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:00,497 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:00,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 21:50:00,698 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:00,698 INFO L82 PathProgramCache]: Analyzing trace with hash 450073546, now seen corresponding path program 1 times [2019-12-07 21:50:00,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:00,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797134429] [2019-12-07 21:50:00,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:00,806 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:50:00,807 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:00,820 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:00,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797134429] [2019-12-07 21:50:00,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:50:00,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 21:50:00,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920275340] [2019-12-07 21:50:00,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:50:00,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:50:00,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:50:00,830 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 4 states. [2019-12-07 21:50:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:00,842 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2019-12-07 21:50:00,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:50:00,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-12-07 21:50:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:00,843 INFO L225 Difference]: With dead ends: 127 [2019-12-07 21:50:00,843 INFO L226 Difference]: Without dead ends: 53 [2019-12-07 21:50:00,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:50:00,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-12-07 21:50:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-12-07 21:50:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 21:50:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-12-07 21:50:00,849 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2019-12-07 21:50:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:00,850 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-12-07 21:50:00,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:50:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-12-07 21:50:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 21:50:00,850 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:00,851 INFO L410 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] [2019-12-07 21:50:01,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 21:50:01,052 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:01,053 INFO L82 PathProgramCache]: Analyzing trace with hash 445162074, now seen corresponding path program 1 times [2019-12-07 21:50:01,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:01,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199013679] [2019-12-07 21:50:01,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:01,223 INFO L264 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:50:01,225 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:01,233 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:01,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199013679] [2019-12-07 21:50:01,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:50:01,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-12-07 21:50:01,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856864761] [2019-12-07 21:50:01,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:50:01,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:01,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:50:01,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:50:01,241 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 4 states. [2019-12-07 21:50:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:01,263 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2019-12-07 21:50:01,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:50:01,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-12-07 21:50:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:01,265 INFO L225 Difference]: With dead ends: 170 [2019-12-07 21:50:01,265 INFO L226 Difference]: Without dead ends: 123 [2019-12-07 21:50:01,266 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:50:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-12-07 21:50:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2019-12-07 21:50:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 21:50:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2019-12-07 21:50:01,276 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2019-12-07 21:50:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:01,277 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2019-12-07 21:50:01,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:50:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2019-12-07 21:50:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 21:50:01,278 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:01,278 INFO L410 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] [2019-12-07 21:50:01,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 21:50:01,479 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:01,480 INFO L82 PathProgramCache]: Analyzing trace with hash 96758808, now seen corresponding path program 1 times [2019-12-07 21:50:01,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:01,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473861954] [2019-12-07 21:50:01,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:01,635 INFO L264 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:50:01,637 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:01,644 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:01,646 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473861954] [2019-12-07 21:50:01,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:50:01,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 21:50:01,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732651389] [2019-12-07 21:50:01,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:50:01,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:01,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:50:01,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:50:01,649 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2019-12-07 21:50:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:01,704 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2019-12-07 21:50:01,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:50:01,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 21:50:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:01,705 INFO L225 Difference]: With dead ends: 159 [2019-12-07 21:50:01,705 INFO L226 Difference]: Without dead ends: 93 [2019-12-07 21:50:01,706 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:50:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-12-07 21:50:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-12-07 21:50:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-12-07 21:50:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2019-12-07 21:50:01,714 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2019-12-07 21:50:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:01,715 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2019-12-07 21:50:01,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:50:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2019-12-07 21:50:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 21:50:01,716 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:01,716 INFO L410 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] [2019-12-07 21:50:01,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 21:50:01,918 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:01,919 INFO L82 PathProgramCache]: Analyzing trace with hash -732744145, now seen corresponding path program 1 times [2019-12-07 21:50:01,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:01,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691644897] [2019-12-07 21:50:01,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:02,070 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 21:50:02,072 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:02,085 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:02,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691644897] [2019-12-07 21:50:02,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:50:02,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-12-07 21:50:02,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682147876] [2019-12-07 21:50:02,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 21:50:02,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:02,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 21:50:02,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 21:50:02,111 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 8 states. [2019-12-07 21:50:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:02,360 INFO L93 Difference]: Finished difference Result 668 states and 972 transitions. [2019-12-07 21:50:02,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 21:50:02,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-12-07 21:50:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:02,363 INFO L225 Difference]: With dead ends: 668 [2019-12-07 21:50:02,363 INFO L226 Difference]: Without dead ends: 583 [2019-12-07 21:50:02,364 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-12-07 21:50:02,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-12-07 21:50:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 227. [2019-12-07 21:50:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-12-07 21:50:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2019-12-07 21:50:02,388 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2019-12-07 21:50:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:02,388 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2019-12-07 21:50:02,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 21:50:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2019-12-07 21:50:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 21:50:02,390 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:02,390 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:02,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 21:50:02,592 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:02,593 INFO L82 PathProgramCache]: Analyzing trace with hash 32404688, now seen corresponding path program 1 times [2019-12-07 21:50:02,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:02,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808944729] [2019-12-07 21:50:02,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:02,829 INFO L264 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:50:02,832 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:02,843 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:02,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808944729] [2019-12-07 21:50:02,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195250391] [2019-12-07 21:50:02,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 21:50:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:02,963 INFO L264 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 21:50:02,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 21:50:02,990 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 21:50:02,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:50:02,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2019-12-07 21:50:02,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652363950] [2019-12-07 21:50:02,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:50:02,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:02,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:50:02,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:50:02,994 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand 5 states. [2019-12-07 21:50:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:03,145 INFO L93 Difference]: Finished difference Result 543 states and 767 transitions. [2019-12-07 21:50:03,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 21:50:03,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2019-12-07 21:50:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:03,149 INFO L225 Difference]: With dead ends: 543 [2019-12-07 21:50:03,149 INFO L226 Difference]: Without dead ends: 541 [2019-12-07 21:50:03,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:50:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-12-07 21:50:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 227. [2019-12-07 21:50:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-12-07 21:50:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 314 transitions. [2019-12-07 21:50:03,174 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 314 transitions. Word has length 40 [2019-12-07 21:50:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:03,175 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 314 transitions. [2019-12-07 21:50:03,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:50:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 314 transitions. [2019-12-07 21:50:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-12-07 21:50:03,177 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:03,177 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:03,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 21:50:03,579 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:03,580 INFO L82 PathProgramCache]: Analyzing trace with hash -89350387, now seen corresponding path program 1 times [2019-12-07 21:50:03,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:03,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235179474] [2019-12-07 21:50:03,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:03,765 INFO L264 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:50:03,766 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:03,777 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:03,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235179474] [2019-12-07 21:50:03,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [656897036] [2019-12-07 21:50:03,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 21:50:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:03,892 INFO L264 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:50:03,894 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:03,905 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:50:03,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:50:03,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3, 3] total 7 [2019-12-07 21:50:03,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353824912] [2019-12-07 21:50:03,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:50:03,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:03,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:50:03,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:50:03,911 INFO L87 Difference]: Start difference. First operand 227 states and 314 transitions. Second operand 3 states. [2019-12-07 21:50:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:04,092 INFO L93 Difference]: Finished difference Result 454 states and 628 transitions. [2019-12-07 21:50:04,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:50:04,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-12-07 21:50:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:04,093 INFO L225 Difference]: With dead ends: 454 [2019-12-07 21:50:04,093 INFO L226 Difference]: Without dead ends: 169 [2019-12-07 21:50:04,094 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:50:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-12-07 21:50:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2019-12-07 21:50:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-12-07 21:50:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 227 transitions. [2019-12-07 21:50:04,104 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 227 transitions. Word has length 51 [2019-12-07 21:50:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:04,104 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 227 transitions. [2019-12-07 21:50:04,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:50:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 227 transitions. [2019-12-07 21:50:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 21:50:04,105 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:04,105 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:04,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 21:50:04,507 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:04,508 INFO L82 PathProgramCache]: Analyzing trace with hash 432163154, now seen corresponding path program 1 times [2019-12-07 21:50:04,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:04,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276151823] [2019-12-07 21:50:04,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:04,626 INFO L264 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 21:50:04,628 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:50:04,640 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:50:04,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276151823] [2019-12-07 21:50:04,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:50:04,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 21:50:04,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906634919] [2019-12-07 21:50:04,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:50:04,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:04,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:50:04,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:50:04,644 INFO L87 Difference]: Start difference. First operand 169 states and 227 transitions. Second operand 5 states. [2019-12-07 21:50:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:04,702 INFO L93 Difference]: Finished difference Result 454 states and 603 transitions. [2019-12-07 21:50:04,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:50:04,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-12-07 21:50:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:04,703 INFO L225 Difference]: With dead ends: 454 [2019-12-07 21:50:04,704 INFO L226 Difference]: Without dead ends: 291 [2019-12-07 21:50:04,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:50:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-12-07 21:50:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 184. [2019-12-07 21:50:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2019-12-07 21:50:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2019-12-07 21:50:04,715 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 52 [2019-12-07 21:50:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:04,716 INFO L462 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2019-12-07 21:50:04,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:50:04,716 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2019-12-07 21:50:04,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 21:50:04,717 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:04,717 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:04,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-12-07 21:50:04,918 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash 706922768, now seen corresponding path program 1 times [2019-12-07 21:50:04,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:04,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030502379] [2019-12-07 21:50:04,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:05,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:50:05,029 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:50:05,038 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:50:05,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030502379] [2019-12-07 21:50:05,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:50:05,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 21:50:05,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867933799] [2019-12-07 21:50:05,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:50:05,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:05,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:50:05,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:50:05,050 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand 6 states. [2019-12-07 21:50:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:05,091 INFO L93 Difference]: Finished difference Result 418 states and 547 transitions. [2019-12-07 21:50:05,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 21:50:05,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2019-12-07 21:50:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:05,093 INFO L225 Difference]: With dead ends: 418 [2019-12-07 21:50:05,093 INFO L226 Difference]: Without dead ends: 240 [2019-12-07 21:50:05,093 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:50:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2019-12-07 21:50:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 154. [2019-12-07 21:50:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-12-07 21:50:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 198 transitions. [2019-12-07 21:50:05,102 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 198 transitions. Word has length 52 [2019-12-07 21:50:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:05,102 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 198 transitions. [2019-12-07 21:50:05,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:50:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 198 transitions. [2019-12-07 21:50:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-12-07 21:50:05,103 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:05,103 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:05,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2019-12-07 21:50:05,304 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:05,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:05,305 INFO L82 PathProgramCache]: Analyzing trace with hash 134497996, now seen corresponding path program 1 times [2019-12-07 21:50:05,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:05,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012489519] [2019-12-07 21:50:05,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:05,471 INFO L264 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 21:50:05,472 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:50:05,493 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:50:05,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012489519] [2019-12-07 21:50:05,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1923680425] [2019-12-07 21:50:05,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 21:50:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:05,625 INFO L264 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 21:50:05,626 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:50:05,634 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:50:05,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74671309] [2019-12-07 21:50:05,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:50:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:50:05,731 INFO L264 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 21:50:05,732 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:50:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:50:05,747 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:50:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:50:05,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 21:50:05,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2019-12-07 21:50:05,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401832184] [2019-12-07 21:50:05,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 21:50:05,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:50:05,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 21:50:05,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-12-07 21:50:05,755 INFO L87 Difference]: Start difference. First operand 154 states and 198 transitions. Second operand 10 states. [2019-12-07 21:50:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:50:06,346 INFO L93 Difference]: Finished difference Result 998 states and 1317 transitions. [2019-12-07 21:50:06,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-07 21:50:06,347 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2019-12-07 21:50:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:50:06,350 INFO L225 Difference]: With dead ends: 998 [2019-12-07 21:50:06,350 INFO L226 Difference]: Without dead ends: 874 [2019-12-07 21:50:06,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-12-07 21:50:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2019-12-07 21:50:06,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 273. [2019-12-07 21:50:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-12-07 21:50:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 358 transitions. [2019-12-07 21:50:06,370 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 358 transitions. Word has length 53 [2019-12-07 21:50:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:50:06,371 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 358 transitions. [2019-12-07 21:50:06,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 21:50:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 358 transitions. [2019-12-07 21:50:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-12-07 21:50:06,371 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:50:06,372 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:50:06,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 21:50:06,975 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:50:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:50:06,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1809371945, now seen corresponding path program 2 times [2019-12-07 21:50:06,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:50:06,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985625748] [2019-12-07 21:50:06,978 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2019-12-07 21:50:07,991 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 21:50:07,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-12-07 21:50:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:50:08,917 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 21:50:08,917 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:50:09,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2019-12-07 21:50:09,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:50:09 BoogieIcfgContainer [2019-12-07 21:50:09,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:50:09,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:50:09,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:50:09,241 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:50:09,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:50:00" (3/4) ... [2019-12-07 21:50:09,242 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:50:09,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_53eb6d0c-9bbc-426a-aef8-f5d71e291e4b/bin/utaipan/witness.graphml [2019-12-07 21:50:09,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:50:09,322 INFO L168 Benchmark]: Toolchain (without parser) took 10231.52 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 312.5 MB). Free memory was 953.7 MB in the beginning and 1.0 GB in the end (delta: -93.1 MB). Peak memory consumption was 219.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:50:09,322 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:50:09,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:50:09,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:50:09,323 INFO L168 Benchmark]: Boogie Preprocessor took 33.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:50:09,323 INFO L168 Benchmark]: RCFGBuilder took 616.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.7 MB). Peak memory consumption was 77.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:50:09,323 INFO L168 Benchmark]: TraceAbstraction took 9070.04 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 179.8 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -66.8 MB). Peak memory consumption was 113.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:50:09,323 INFO L168 Benchmark]: Witness Printer took 80.39 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. [2019-12-07 21:50:09,325 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 616.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.7 MB). Peak memory consumption was 77.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9070.04 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 179.8 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -66.8 MB). Peak memory consumption was 113.1 MB. Max. memory is 11.5 GB. * Witness Printer took 80.39 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 828]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L219] int pumpRunning = 0; [L220] int systemActive = 1; [L599] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L868] int waterLevel = 1; [L869] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] COND TRUE waterLevel < 2 [L887] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L285] COND FALSE !(\read(pumpRunning)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L259] COND TRUE ! pumpRunning [L396] int retValue_acc ; [L397] int tmp ; [L398] int tmp___0 ; [L948] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L951] COND FALSE !(waterLevel < 2) [L955] retValue_acc = 0 [L956] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L402] tmp = isHighWaterSensorDry() [L404] COND FALSE !(\read(tmp)) [L407] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L409] retValue_acc = tmp___0 [L410] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L261] tmp = isHighWaterLevel() [L263] COND TRUE \read(tmp) [L315] int tmp ; [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L319] tmp = isMethaneAlarm() [L321] COND FALSE !(\read(tmp)) [L310] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L804] tmp = getWaterLevel() [L806] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L163] tmp = __VERIFIER_nondet_int() [L165] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L227] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L874] COND TRUE waterLevel > 0 [L875] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L285] COND TRUE \read(pumpRunning) [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L287] tmp = isMethaneAlarm() [L289] COND FALSE !(\read(tmp)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L259] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L804] tmp = getWaterLevel() [L806] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L227] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L874] COND TRUE waterLevel > 0 [L875] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L234] COND TRUE \read(systemActive) [L282] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L285] COND TRUE \read(pumpRunning) [L340] int retValue_acc ; [L907] int retValue_acc ; [L910] retValue_acc = methaneLevelCritical [L911] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L344] retValue_acc = isMethaneLevelCritical() [L346] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L287] tmp = isMethaneAlarm() [L289] COND FALSE !(\read(tmp)) [L256] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L259] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L799] int tmp ; [L800] int tmp___0 ; [L939] int retValue_acc ; [L942] retValue_acc = waterLevel [L943] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L804] tmp = getWaterLevel() [L806] COND TRUE tmp == 0 [L351] int retValue_acc ; [L354] retValue_acc = pumpRunning [L355] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L808] tmp___0 = isPumpRunning() [L810] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L828] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Result: UNSAFE, OverallTime: 8.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1150 SDtfs, 2492 SDslu, 2518 SDs, 0 SdLazy, 441 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1109 GetRequests, 1037 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 1517 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1070 ConstructedInterpolants, 0 QuantifiedInterpolants, 117226 SizeOfPredicates, 27 NumberOfNonLiveVariables, 2890 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 28 InterpolantComputations, 18 PerfectInterpolantSequences, 178/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...