./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f3466b08a64c7fddf78a299dda71b27bda6ead813da06152b5ee1cea2f1c203 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:05:21,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:05:21,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:05:21,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:05:21,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:05:21,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:05:21,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:05:21,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:05:21,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:05:21,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:05:21,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:05:21,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:05:21,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:05:21,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:05:21,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:05:21,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:05:21,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:05:21,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:05:21,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:05:21,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:05:21,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:05:21,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:05:21,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:05:21,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:05:21,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:05:21,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:05:21,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:05:21,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:05:21,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:05:21,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:05:21,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:05:21,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:05:21,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:05:21,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:05:21,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:05:21,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:05:21,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:05:21,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:05:21,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:05:21,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:05:21,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:05:21,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:05:21,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:05:21,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:05:21,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:05:21,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:05:21,415 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:05:21,415 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:05:21,415 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:05:21,416 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:05:21,416 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:05:21,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:05:21,416 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:05:21,416 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:05:21,416 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:05:21,417 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:05:21,417 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:05:21,417 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:05:21,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:05:21,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:05:21,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:05:21,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:05:21,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:05:21,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:05:21,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:05:21,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:05:21,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:05:21,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:05:21,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:05:21,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:05:21,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:05:21,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:05:21,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:05:21,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:05:21,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:05:21,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:05:21,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:05:21,421 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:05:21,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:05:21,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:05:21,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:05:21,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:05:21,422 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f3466b08a64c7fddf78a299dda71b27bda6ead813da06152b5ee1cea2f1c203 [2021-11-12 23:05:21,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:05:21,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:05:21,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:05:21,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:05:21,720 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:05:21,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c [2021-11-12 23:05:21,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/0ba2c9b58/6b4500bdc9ea4f17966478cf72024a23/FLAG81f182574 [2021-11-12 23:05:22,359 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:05:22,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c [2021-11-12 23:05:22,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/0ba2c9b58/6b4500bdc9ea4f17966478cf72024a23/FLAG81f182574 [2021-11-12 23:05:22,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/0ba2c9b58/6b4500bdc9ea4f17966478cf72024a23 [2021-11-12 23:05:22,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:05:22,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:05:22,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:05:22,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:05:22,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:05:22,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:05:22" (1/1) ... [2021-11-12 23:05:22,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698199f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:22, skipping insertion in model container [2021-11-12 23:05:22,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:05:22" (1/1) ... [2021-11-12 23:05:22,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:05:22,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:05:23,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c[20836,20849] [2021-11-12 23:05:23,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:05:23,089 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:05:23,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11703d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:23, skipping insertion in model container [2021-11-12 23:05:23,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:05:23,090 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:05:23,092 INFO L158 Benchmark]: Toolchain (without parser) took 452.60ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 103.0MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:05:23,093 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 54.7MB in the beginning and 54.7MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:05:23,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.89ms. Allocated memory is still 132.1MB. Free memory was 96.1MB in the beginning and 103.0MB in the end (delta: -7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:05:23,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 54.7MB in the beginning and 54.7MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.89ms. Allocated memory is still 132.1MB. Free memory was 96.1MB in the beginning and 103.0MB in the end (delta: -7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 755]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f3466b08a64c7fddf78a299dda71b27bda6ead813da06152b5ee1cea2f1c203 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:05:25,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:05:25,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:05:25,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:05:25,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:05:25,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:05:25,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:05:25,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:05:25,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:05:25,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:05:25,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:05:25,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:05:25,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:05:25,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:05:25,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:05:25,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:05:25,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:05:25,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:05:25,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:05:25,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:05:25,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:05:25,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:05:25,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:05:25,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:05:25,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:05:25,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:05:25,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:05:25,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:05:25,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:05:25,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:05:25,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:05:25,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:05:25,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:05:25,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:05:25,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:05:25,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:05:25,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:05:25,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:05:25,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:05:25,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:05:25,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:05:25,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:05:25,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:05:25,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:05:25,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:05:25,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:05:25,899 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:05:25,899 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:05:25,900 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:05:25,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:05:25,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:05:25,901 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:05:25,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:05:25,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:05:25,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:05:25,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:05:25,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:05:25,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:05:25,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:05:25,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:05:25,906 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:05:25,907 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:05:25,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:05:25,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:05:25,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:05:25,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:05:25,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:05:25,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:05:25,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:05:25,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:05:25,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:05:25,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:05:25,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:05:25,911 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:05:25,911 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:05:25,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:05:25,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:05:25,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:05:25,913 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f3466b08a64c7fddf78a299dda71b27bda6ead813da06152b5ee1cea2f1c203 [2021-11-12 23:05:26,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:05:26,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:05:26,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:05:26,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:05:26,370 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:05:26,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c [2021-11-12 23:05:26,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/0503eb830/e7bd8d6e7a6c4ee89b4d03aad7863c96/FLAG7c93d35a2 [2021-11-12 23:05:27,192 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:05:27,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c [2021-11-12 23:05:27,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/0503eb830/e7bd8d6e7a6c4ee89b4d03aad7863c96/FLAG7c93d35a2 [2021-11-12 23:05:27,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/data/0503eb830/e7bd8d6e7a6c4ee89b4d03aad7863c96 [2021-11-12 23:05:27,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:05:27,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:05:27,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:05:27,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:05:27,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:05:27,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:05:27" (1/1) ... [2021-11-12 23:05:27,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596aa03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:27, skipping insertion in model container [2021-11-12 23:05:27,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:05:27" (1/1) ... [2021-11-12 23:05:27,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:05:27,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:05:27,981 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c[20836,20849] [2021-11-12 23:05:27,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:05:27,999 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:05:28,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:05:28,099 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c[20836,20849] [2021-11-12 23:05:28,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:05:28,109 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:05:28,179 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/sv-benchmarks/c/product-lines/minepump_spec2_productSimulator.cil.c[20836,20849] [2021-11-12 23:05:28,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:05:28,204 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:05:28,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28 WrapperNode [2021-11-12 23:05:28,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:05:28,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:05:28,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:05:28,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:05:28,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:05:28,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:05:28,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:05:28,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:05:28,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:05:28,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:05:28,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:05:28,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:05:28,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (1/1) ... [2021-11-12 23:05:28,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:05:28,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:05:28,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:05:28,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:05:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:05:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2021-11-12 23:05:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2021-11-12 23:05:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-12 23:05:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-12 23:05:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-12 23:05:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-12 23:05:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-12 23:05:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-12 23:05:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2021-11-12 23:05:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2021-11-12 23:05:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-12 23:05:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-12 23:05:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2021-11-12 23:05:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2021-11-12 23:05:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:05:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2021-11-12 23:05:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2021-11-12 23:05:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-12 23:05:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-12 23:05:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-12 23:05:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-12 23:05:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-12 23:05:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-12 23:05:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-12 23:05:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-12 23:05:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:05:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:05:30,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:05:30,726 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:05:30,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:05:30 BoogieIcfgContainer [2021-11-12 23:05:30,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:05:30,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:05:30,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:05:30,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:05:30,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:05:27" (1/3) ... [2021-11-12 23:05:30,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8cc1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:05:30, skipping insertion in model container [2021-11-12 23:05:30,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:05:28" (2/3) ... [2021-11-12 23:05:30,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8cc1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:05:30, skipping insertion in model container [2021-11-12 23:05:30,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:05:30" (3/3) ... [2021-11-12 23:05:30,736 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2021-11-12 23:05:30,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:05:30,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:05:30,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:05:30,797 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:05:30,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:05:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 117 states have internal predecessors, (138), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-12 23:05:30,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 23:05:30,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:30,831 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:30,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash -733132601, now seen corresponding path program 1 times [2021-11-12 23:05:30,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:30,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075442960] [2021-11-12 23:05:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:30,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:30,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:30,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:30,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:05:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:31,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:05:31,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:31,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:31,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:31,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075442960] [2021-11-12 23:05:31,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075442960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:31,585 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:31,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:05:31,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77041713] [2021-11-12 23:05:31,588 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:31,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:05:31,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:05:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:05:31,633 INFO L87 Difference]: Start difference. First operand has 145 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 117 states have internal predecessors, (138), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:05:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:31,688 INFO L93 Difference]: Finished difference Result 266 states and 370 transitions. [2021-11-12 23:05:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:05:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2021-11-12 23:05:31,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:31,702 INFO L225 Difference]: With dead ends: 266 [2021-11-12 23:05:31,702 INFO L226 Difference]: Without dead ends: 136 [2021-11-12 23:05:31,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:05:31,710 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:31,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:05:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-12 23:05:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-12 23:05:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 109 states have internal predecessors, (124), 30 states have call successors, (30), 12 states have call predecessors, (30), 11 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-12 23:05:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 183 transitions. [2021-11-12 23:05:31,764 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 183 transitions. Word has length 55 [2021-11-12 23:05:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:31,766 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 183 transitions. [2021-11-12 23:05:31,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:05:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 183 transitions. [2021-11-12 23:05:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:05:31,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:31,771 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:31,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:31,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:31,984 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash -878158854, now seen corresponding path program 1 times [2021-11-12 23:05:31,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:31,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312813907] [2021-11-12 23:05:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:31,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:31,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:31,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:31,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:05:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:32,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:05:32,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:32,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:32,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:32,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312813907] [2021-11-12 23:05:32,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312813907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:32,575 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:32,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:05:32,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503447211] [2021-11-12 23:05:32,576 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:32,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:05:32,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:05:32,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:05:32,583 INFO L87 Difference]: Start difference. First operand 136 states and 183 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:05:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:32,636 INFO L93 Difference]: Finished difference Result 215 states and 290 transitions. [2021-11-12 23:05:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:05:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2021-11-12 23:05:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:32,645 INFO L225 Difference]: With dead ends: 215 [2021-11-12 23:05:32,646 INFO L226 Difference]: Without dead ends: 127 [2021-11-12 23:05:32,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:05:32,652 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 21 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:32,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 458 Invalid, 1 Unknown, 0 Unchecked, 7.04ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 3.50ms Time] [2021-11-12 23:05:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-12 23:05:32,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-12 23:05:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 103 states have internal predecessors, (117), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:05:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 171 transitions. [2021-11-12 23:05:32,677 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 171 transitions. Word has length 56 [2021-11-12 23:05:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:32,678 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 171 transitions. [2021-11-12 23:05:32,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:05:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 171 transitions. [2021-11-12 23:05:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 23:05:32,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:32,682 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:32,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:05:32,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:32,884 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -696247410, now seen corresponding path program 1 times [2021-11-12 23:05:32,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:32,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625300218] [2021-11-12 23:05:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:32,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:32,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:32,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:32,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:05:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:33,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:05:33,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:33,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:33,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:33,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625300218] [2021-11-12 23:05:33,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625300218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:33,475 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:33,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 23:05:33,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967054174] [2021-11-12 23:05:33,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:33,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:05:33,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:05:33,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:05:33,480 INFO L87 Difference]: Start difference. First operand 127 states and 171 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:05:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:33,652 INFO L93 Difference]: Finished difference Result 378 states and 517 transitions. [2021-11-12 23:05:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:05:33,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 61 [2021-11-12 23:05:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:33,661 INFO L225 Difference]: With dead ends: 378 [2021-11-12 23:05:33,661 INFO L226 Difference]: Without dead ends: 274 [2021-11-12 23:05:33,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:05:33,667 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 257 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.44ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:33,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 416 Invalid, 59 Unknown, 0 Unchecked, 9.44ms Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 98.41ms Time] [2021-11-12 23:05:33,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-12 23:05:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 268. [2021-11-12 23:05:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 188 states have (on average 1.377659574468085) internal successors, (259), 220 states have internal predecessors, (259), 53 states have call successors, (53), 26 states have call predecessors, (53), 26 states have return successors, (54), 41 states have call predecessors, (54), 53 states have call successors, (54) [2021-11-12 23:05:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 366 transitions. [2021-11-12 23:05:33,739 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 366 transitions. Word has length 61 [2021-11-12 23:05:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:33,741 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 366 transitions. [2021-11-12 23:05:33,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:05:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 366 transitions. [2021-11-12 23:05:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:05:33,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:33,755 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:33,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:33,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:33,968 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1929049426, now seen corresponding path program 1 times [2021-11-12 23:05:33,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:33,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019834103] [2021-11-12 23:05:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:33,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:33,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:33,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:33,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:05:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:34,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:05:34,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:34,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:34,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:34,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019834103] [2021-11-12 23:05:34,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019834103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:34,672 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:34,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 7 [2021-11-12 23:05:34,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465563571] [2021-11-12 23:05:34,673 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:34,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:05:34,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:05:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:05:34,674 INFO L87 Difference]: Start difference. First operand 268 states and 366 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-12 23:05:36,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:36,417 INFO L93 Difference]: Finished difference Result 756 states and 1046 transitions. [2021-11-12 23:05:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:05:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 65 [2021-11-12 23:05:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:36,423 INFO L225 Difference]: With dead ends: 756 [2021-11-12 23:05:36,423 INFO L226 Difference]: Without dead ends: 511 [2021-11-12 23:05:36,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:05:36,426 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 118 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1618.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.43ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1668.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:36,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 830 Invalid, 89 Unknown, 0 Unchecked, 7.43ms Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 1668.64ms Time] [2021-11-12 23:05:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-12 23:05:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 502. [2021-11-12 23:05:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 350 states have (on average 1.3714285714285714) internal successors, (480), 413 states have internal predecessors, (480), 100 states have call successors, (100), 51 states have call predecessors, (100), 51 states have return successors, (105), 76 states have call predecessors, (105), 100 states have call successors, (105) [2021-11-12 23:05:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 685 transitions. [2021-11-12 23:05:36,474 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 685 transitions. Word has length 65 [2021-11-12 23:05:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:36,474 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 685 transitions. [2021-11-12 23:05:36,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-12 23:05:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 685 transitions. [2021-11-12 23:05:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-12 23:05:36,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:36,478 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:36,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:36,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:36,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -427180938, now seen corresponding path program 1 times [2021-11-12 23:05:36,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:36,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080680186] [2021-11-12 23:05:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:36,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:36,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:36,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:36,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:05:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:36,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:05:36,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:37,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:37,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:37,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080680186] [2021-11-12 23:05:37,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080680186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:37,213 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:37,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:05:37,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999673122] [2021-11-12 23:05:37,213 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:37,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:05:37,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:05:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:05:37,215 INFO L87 Difference]: Start difference. First operand 502 states and 685 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:05:37,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:37,370 INFO L93 Difference]: Finished difference Result 1225 states and 1735 transitions. [2021-11-12 23:05:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:05:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2021-11-12 23:05:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:37,378 INFO L225 Difference]: With dead ends: 1225 [2021-11-12 23:05:37,378 INFO L226 Difference]: Without dead ends: 746 [2021-11-12 23:05:37,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:05:37,382 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 134 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.79ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:37,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 651 Invalid, 43 Unknown, 0 Unchecked, 4.79ms Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 74.94ms Time] [2021-11-12 23:05:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-12 23:05:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 727. [2021-11-12 23:05:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 515 states have (on average 1.3223300970873786) internal successors, (681), 584 states have internal predecessors, (681), 130 states have call successors, (130), 81 states have call predecessors, (130), 81 states have return successors, (179), 120 states have call predecessors, (179), 130 states have call successors, (179) [2021-11-12 23:05:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 990 transitions. [2021-11-12 23:05:37,459 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 990 transitions. Word has length 69 [2021-11-12 23:05:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:37,459 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 990 transitions. [2021-11-12 23:05:37,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:05:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 990 transitions. [2021-11-12 23:05:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 23:05:37,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:37,463 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:37,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:37,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:37,676 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:37,676 INFO L85 PathProgramCache]: Analyzing trace with hash -222804072, now seen corresponding path program 1 times [2021-11-12 23:05:37,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:37,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481893396] [2021-11-12 23:05:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:37,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:37,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:37,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:37,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:05:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:37,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:05:37,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:38,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:38,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:38,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481893396] [2021-11-12 23:05:38,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481893396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:38,278 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:38,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:05:38,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604169743] [2021-11-12 23:05:38,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:38,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:05:38,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:05:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:05:38,280 INFO L87 Difference]: Start difference. First operand 727 states and 990 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:05:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:38,375 INFO L93 Difference]: Finished difference Result 1471 states and 2108 transitions. [2021-11-12 23:05:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:05:38,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 89 [2021-11-12 23:05:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:38,383 INFO L225 Difference]: With dead ends: 1471 [2021-11-12 23:05:38,383 INFO L226 Difference]: Without dead ends: 767 [2021-11-12 23:05:38,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:05:38,388 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 12 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.25ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:38,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 693 Invalid, 17 Unknown, 0 Unchecked, 3.25ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 19.95ms Time] [2021-11-12 23:05:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-11-12 23:05:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 739. [2021-11-12 23:05:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 527 states have (on average 1.3149905123339658) internal successors, (693), 596 states have internal predecessors, (693), 130 states have call successors, (130), 81 states have call predecessors, (130), 81 states have return successors, (179), 120 states have call predecessors, (179), 130 states have call successors, (179) [2021-11-12 23:05:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1002 transitions. [2021-11-12 23:05:38,450 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1002 transitions. Word has length 89 [2021-11-12 23:05:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:38,451 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 1002 transitions. [2021-11-12 23:05:38,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:05:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1002 transitions. [2021-11-12 23:05:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 23:05:38,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:38,454 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:38,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:38,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:38,667 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1700423962, now seen corresponding path program 1 times [2021-11-12 23:05:38,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:38,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649164827] [2021-11-12 23:05:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:38,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:38,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:38,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:05:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:38,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:38,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:39,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:39,210 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:39,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649164827] [2021-11-12 23:05:39,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649164827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:39,211 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:39,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:05:39,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520009841] [2021-11-12 23:05:39,211 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:39,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:05:39,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:05:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:05:39,213 INFO L87 Difference]: Start difference. First operand 739 states and 1002 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:05:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:39,295 INFO L93 Difference]: Finished difference Result 1507 states and 2148 transitions. [2021-11-12 23:05:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:05:39,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 89 [2021-11-12 23:05:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:39,303 INFO L225 Difference]: With dead ends: 1507 [2021-11-12 23:05:39,303 INFO L226 Difference]: Without dead ends: 791 [2021-11-12 23:05:39,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:05:39,307 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 18 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:39,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 871 Invalid, 19 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 17.25ms Time] [2021-11-12 23:05:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-11-12 23:05:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 747. [2021-11-12 23:05:39,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 535 states have (on average 1.3102803738317756) internal successors, (701), 604 states have internal predecessors, (701), 130 states have call successors, (130), 81 states have call predecessors, (130), 81 states have return successors, (179), 120 states have call predecessors, (179), 130 states have call successors, (179) [2021-11-12 23:05:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1010 transitions. [2021-11-12 23:05:39,369 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1010 transitions. Word has length 89 [2021-11-12 23:05:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:39,370 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 1010 transitions. [2021-11-12 23:05:39,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:05:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1010 transitions. [2021-11-12 23:05:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 23:05:39,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:39,373 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:39,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:39,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:39,586 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:39,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1208339940, now seen corresponding path program 1 times [2021-11-12 23:05:39,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:39,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661332465] [2021-11-12 23:05:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:39,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:39,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:39,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:05:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:39,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:39,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:40,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:40,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:40,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661332465] [2021-11-12 23:05:40,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661332465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:40,327 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:40,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [] total 5 [2021-11-12 23:05:40,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909286880] [2021-11-12 23:05:40,328 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:40,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:05:40,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:05:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:05:40,329 INFO L87 Difference]: Start difference. First operand 747 states and 1010 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-12 23:05:41,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:42,227 INFO L93 Difference]: Finished difference Result 2861 states and 4153 transitions. [2021-11-12 23:05:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:05:42,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 89 [2021-11-12 23:05:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:42,249 INFO L225 Difference]: With dead ends: 2861 [2021-11-12 23:05:42,249 INFO L226 Difference]: Without dead ends: 2137 [2021-11-12 23:05:42,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:05:42,257 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 323 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1674.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.43ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1739.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:42,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 678 Invalid, 209 Unknown, 0 Unchecked, 6.43ms Time], IncrementalHoareTripleChecker [34 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1739.50ms Time] [2021-11-12 23:05:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2021-11-12 23:05:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2123. [2021-11-12 23:05:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 1539 states have (on average 1.2936972059779077) internal successors, (1991), 1698 states have internal predecessors, (1991), 348 states have call successors, (348), 243 states have call predecessors, (348), 235 states have return successors, (584), 328 states have call predecessors, (584), 348 states have call successors, (584) [2021-11-12 23:05:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2923 transitions. [2021-11-12 23:05:42,451 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2923 transitions. Word has length 89 [2021-11-12 23:05:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:42,452 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 2923 transitions. [2021-11-12 23:05:42,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-12 23:05:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2923 transitions. [2021-11-12 23:05:42,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-12 23:05:42,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:42,456 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:42,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:42,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:42,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1479376382, now seen corresponding path program 1 times [2021-11-12 23:05:42,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:42,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129955868] [2021-11-12 23:05:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:42,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:42,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:42,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:42,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:05:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:42,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:05:42,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:43,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:43,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:43,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129955868] [2021-11-12 23:05:43,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129955868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:43,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:43,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:05:43,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618562854] [2021-11-12 23:05:43,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:43,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:05:43,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:05:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:05:43,309 INFO L87 Difference]: Start difference. First operand 2123 states and 2923 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:05:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:43,518 INFO L93 Difference]: Finished difference Result 3411 states and 4787 transitions. [2021-11-12 23:05:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:05:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 93 [2021-11-12 23:05:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:43,558 INFO L225 Difference]: With dead ends: 3411 [2021-11-12 23:05:43,558 INFO L226 Difference]: Without dead ends: 3409 [2021-11-12 23:05:43,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:05:43,561 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 111 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:43,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 331 Invalid, 8 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 31.96ms Time] [2021-11-12 23:05:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2021-11-12 23:05:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 2760. [2021-11-12 23:05:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 1983 states have (on average 1.297528996469995) internal successors, (2573), 2209 states have internal predecessors, (2573), 464 states have call successors, (464), 315 states have call predecessors, (464), 312 states have return successors, (835), 427 states have call predecessors, (835), 464 states have call successors, (835) [2021-11-12 23:05:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 3872 transitions. [2021-11-12 23:05:43,824 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 3872 transitions. Word has length 93 [2021-11-12 23:05:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:43,825 INFO L470 AbstractCegarLoop]: Abstraction has 2760 states and 3872 transitions. [2021-11-12 23:05:43,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:05:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 3872 transitions. [2021-11-12 23:05:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-12 23:05:43,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:43,835 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:43,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:44,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:44,049 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash 787335187, now seen corresponding path program 1 times [2021-11-12 23:05:44,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:44,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844836249] [2021-11-12 23:05:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:44,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:44,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:44,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:44,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:05:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:44,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:05:44,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:05:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:05:44,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:05:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-12 23:05:45,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:05:45,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844836249] [2021-11-12 23:05:45,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844836249] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:05:45,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:05:45,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-12 23:05:45,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075777143] [2021-11-12 23:05:45,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:45,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:05:45,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:05:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:05:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:05:45,036 INFO L87 Difference]: Start difference. First operand 2760 states and 3872 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-12 23:05:46,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:05:46,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:46,507 INFO L93 Difference]: Finished difference Result 5991 states and 8627 transitions. [2021-11-12 23:05:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:05:46,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 133 [2021-11-12 23:05:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:46,535 INFO L225 Difference]: With dead ends: 5991 [2021-11-12 23:05:46,535 INFO L226 Difference]: Without dead ends: 3254 [2021-11-12 23:05:46,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:05:46,551 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 91 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1214.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1226.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:46,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 339 Invalid, 4 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 1226.97ms Time] [2021-11-12 23:05:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-11-12 23:05:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3254. [2021-11-12 23:05:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 2369 states have (on average 1.281975517095821) internal successors, (3037), 2595 states have internal predecessors, (3037), 518 states have call successors, (518), 381 states have call predecessors, (518), 366 states have return successors, (937), 469 states have call predecessors, (937), 518 states have call successors, (937) [2021-11-12 23:05:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4492 transitions. [2021-11-12 23:05:46,889 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4492 transitions. Word has length 133 [2021-11-12 23:05:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:46,890 INFO L470 AbstractCegarLoop]: Abstraction has 3254 states and 4492 transitions. [2021-11-12 23:05:46,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-12 23:05:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4492 transitions. [2021-11-12 23:05:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-12 23:05:46,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:46,905 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:46,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:05:47,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:47,118 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:05:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:47,118 INFO L85 PathProgramCache]: Analyzing trace with hash -819425897, now seen corresponding path program 1 times [2021-11-12 23:05:47,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:05:47,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256399074] [2021-11-12 23:05:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:47,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:05:47,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:05:47,120 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:05:47,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:05:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:05:48,356 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:05:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:05:49,854 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:05:49,855 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:05:49,856 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:05:49,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:05:50,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:05:50,078 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:50,082 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:05:50,187 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:05:50,190 INFO L158 Benchmark]: Toolchain (without parser) took 22797.37ms. Allocated memory was 58.7MB in the beginning and 205.5MB in the end (delta: 146.8MB). Free memory was 35.7MB in the beginning and 97.0MB in the end (delta: -61.3MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. [2021-11-12 23:05:50,190 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:05:50,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 809.46ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 35.5MB in the beginning and 43.4MB in the end (delta: -8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:05:50,191 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.52ms. Allocated memory is still 77.6MB. Free memory was 43.2MB in the beginning and 59.9MB in the end (delta: -16.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-12 23:05:50,191 INFO L158 Benchmark]: Boogie Preprocessor took 77.70ms. Allocated memory is still 77.6MB. Free memory was 59.9MB in the beginning and 57.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:05:50,192 INFO L158 Benchmark]: RCFGBuilder took 2347.27ms. Allocated memory is still 77.6MB. Free memory was 57.5MB in the beginning and 50.4MB in the end (delta: 7.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-12 23:05:50,192 INFO L158 Benchmark]: TraceAbstraction took 19459.01ms. Allocated memory was 77.6MB in the beginning and 205.5MB in the end (delta: 127.9MB). Free memory was 50.0MB in the beginning and 97.0MB in the end (delta: -47.0MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2021-11-12 23:05:50,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.7MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 809.46ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 35.5MB in the beginning and 43.4MB in the end (delta: -8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.52ms. Allocated memory is still 77.6MB. Free memory was 43.2MB in the beginning and 59.9MB in the end (delta: -16.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.70ms. Allocated memory is still 77.6MB. Free memory was 59.9MB in the beginning and 57.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2347.27ms. Allocated memory is still 77.6MB. Free memory was 57.5MB in the beginning and 50.4MB in the end (delta: 7.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19459.01ms. Allocated memory was 77.6MB in the beginning and 205.5MB in the end (delta: 127.9MB). Free memory was 50.0MB in the beginning and 97.0MB in the end (delta: -47.0MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:05:50,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a2ab449-af4c-473e-a2bd-c488b31399aa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null