./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG --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 72514ca2b4c5f09004dd08dec38f44e827aa0dd8844c3295d87b722cb68767ea ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG --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 72514ca2b4c5f09004dd08dec38f44e827aa0dd8844c3295d87b722cb68767ea ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:43:12,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:43:12,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:43:12,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:43:12,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:43:12,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:43:12,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:43:12,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:43:12,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:43:12,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:43:12,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:43:12,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:43:12,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:43:12,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:43:12,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:43:12,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:43:12,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:43:12,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:43:12,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:43:12,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:43:12,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:43:12,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:43:12,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:43:12,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:43:12,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:43:12,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:43:12,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:43:12,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:43:12,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:43:12,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:43:12,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:43:12,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:43:12,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:43:12,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:43:12,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:43:12,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:43:12,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:43:12,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:43:12,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:43:12,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:43:12,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:43:12,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:43:12,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:43:12,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:43:12,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:43:12,594 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:43:12,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:43:12,594 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:43:12,594 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:43:12,595 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:43:12,595 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:43:12,595 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:43:12,603 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:43:12,604 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:43:12,604 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:43:12,604 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:43:12,605 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:43:12,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:43:12,606 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:43:12,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:43:12,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:43:12,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:43:12,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:43:12,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:43:12,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:43:12,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:43:12,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:43:12,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:43:12,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:43:12,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:43:12,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:43:12,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:43:12,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:43:12,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:43:12,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:43:12,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:43:12,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:43:12,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:43:12,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:43:12,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:43:12,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:43:12,614 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_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72514ca2b4c5f09004dd08dec38f44e827aa0dd8844c3295d87b722cb68767ea [2021-10-29 04:43:12,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:43:13,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:43:13,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:43:13,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:43:13,020 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:43:13,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2021-10-29 04:43:13,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/3e8e26105/a51290e134b3414f8477a777cf9ecd84/FLAG336a9bb73 [2021-10-29 04:43:13,738 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:43:13,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2021-10-29 04:43:13,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/3e8e26105/a51290e134b3414f8477a777cf9ecd84/FLAG336a9bb73 [2021-10-29 04:43:14,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/3e8e26105/a51290e134b3414f8477a777cf9ecd84 [2021-10-29 04:43:14,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:43:14,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:43:14,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:14,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:43:14,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:43:14,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:14" (1/1) ... [2021-10-29 04:43:14,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339c648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:14, skipping insertion in model container [2021-10-29 04:43:14,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:14" (1/1) ... [2021-10-29 04:43:14,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:43:14,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:43:14,381 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_bf930b97-df23-4068-83f3-576451488974/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c[4389,4402] [2021-10-29 04:43:14,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:14,537 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-29 04:43:14,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7214efd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:14, skipping insertion in model container [2021-10-29 04:43:14,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:14,538 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 04:43:14,541 INFO L168 Benchmark]: Toolchain (without parser) took 491.40 ms. Allocated memory is still 113.2 MB. Free memory was 70.9 MB in the beginning and 83.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:14,542 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory is still 88.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:43:14,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.06 ms. Allocated memory is still 113.2 MB. Free memory was 70.7 MB in the beginning and 84.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:14,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory is still 88.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.06 ms. Allocated memory is still 113.2 MB. Free memory was 70.7 MB in the beginning and 84.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 367]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:43:17,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:43:17,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:43:17,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:43:17,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:43:17,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:43:17,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:43:17,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:43:17,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:43:17,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:43:17,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:43:17,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:43:17,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:43:17,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:43:17,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:43:17,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:43:17,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:43:17,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:43:17,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:43:17,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:43:17,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:43:17,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:43:17,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:43:17,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:43:17,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:43:17,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:43:17,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:43:17,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:43:17,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:43:17,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:43:17,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:43:17,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:43:17,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:43:17,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:43:17,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:43:17,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:43:17,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:43:17,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:43:17,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:43:17,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:43:17,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:43:17,411 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:43:17,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:43:17,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:43:17,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:43:17,466 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:43:17,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:43:17,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:43:17,467 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:43:17,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:43:17,467 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:43:17,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:43:17,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:43:17,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:43:17,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:43:17,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:43:17,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:43:17,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:43:17,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:43:17,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:43:17,473 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:43:17,473 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:43:17,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:43:17,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:43:17,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:43:17,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:43:17,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:43:17,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:43:17,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:43:17,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:43:17,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:43:17,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:43:17,476 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:43:17,476 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:43:17,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:43:17,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:43:17,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:43:17,478 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_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72514ca2b4c5f09004dd08dec38f44e827aa0dd8844c3295d87b722cb68767ea [2021-10-29 04:43:18,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:43:18,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:43:18,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:43:18,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:43:18,053 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:43:18,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2021-10-29 04:43:18,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/8f09514bf/447970fb8279421a9828ebc20c0e0fd5/FLAG473e97a2d [2021-10-29 04:43:18,886 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:43:18,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2021-10-29 04:43:18,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/8f09514bf/447970fb8279421a9828ebc20c0e0fd5/FLAG473e97a2d [2021-10-29 04:43:19,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/data/8f09514bf/447970fb8279421a9828ebc20c0e0fd5 [2021-10-29 04:43:19,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:43:19,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:43:19,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:19,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:43:19,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:43:19,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:19,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4886cde5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19, skipping insertion in model container [2021-10-29 04:43:19,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:19,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:43:19,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:43:19,537 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_bf930b97-df23-4068-83f3-576451488974/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c[4389,4402] [2021-10-29 04:43:19,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:19,694 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 04:43:19,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:43:19,721 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_bf930b97-df23-4068-83f3-576451488974/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c[4389,4402] [2021-10-29 04:43:19,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:19,807 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:43:19,860 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_bf930b97-df23-4068-83f3-576451488974/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c[4389,4402] [2021-10-29 04:43:19,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:19,948 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:43:19,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19 WrapperNode [2021-10-29 04:43:19,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:19,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:43:19,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:43:19,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:43:19,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:43:20,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:43:20,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:43:20,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:43:20,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:43:20,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:43:20,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:43:20,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:43:20,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (1/1) ... [2021-10-29 04:43:20,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:43:20,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:43:20,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:43:20,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:43:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:43:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:43:20,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:43:20,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:43:23,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:43:23,074 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-10-29 04:43:23,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:23 BoogieIcfgContainer [2021-10-29 04:43:23,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:43:23,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:43:23,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:43:23,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:43:23,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:43:19" (1/3) ... [2021-10-29 04:43:23,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2d6707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:43:23, skipping insertion in model container [2021-10-29 04:43:23,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:19" (2/3) ... [2021-10-29 04:43:23,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2d6707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:43:23, skipping insertion in model container [2021-10-29 04:43:23,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:23" (3/3) ... [2021-10-29 04:43:23,087 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2021-10-29 04:43:23,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:43:23,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 04:43:23,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:43:23,173 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:43:23,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 04:43:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 81 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 04:43:23,208 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:23,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:23,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:23,217 INFO L85 PathProgramCache]: Analyzing trace with hash -160768028, now seen corresponding path program 1 times [2021-10-29 04:43:23,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:23,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431167687] [2021-10-29 04:43:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:23,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:23,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:23,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:43:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:23,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:43:23,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:23,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:23,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:23,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431167687] [2021-10-29 04:43:23,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431167687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:23,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:23,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:43:23,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203677219] [2021-10-29 04:43:23,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:43:23,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:43:23,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:43:23,777 INFO L87 Difference]: Start difference. First operand has 82 states, 78 states have (on average 1.5897435897435896) internal successors, (124), 81 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:23,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:23,804 INFO L93 Difference]: Finished difference Result 157 states and 240 transitions. [2021-10-29 04:43:23,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:43:23,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 04:43:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:23,817 INFO L225 Difference]: With dead ends: 157 [2021-10-29 04:43:23,818 INFO L226 Difference]: Without dead ends: 78 [2021-10-29 04:43:23,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:43:23,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-29 04:43:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-29 04:43:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 77 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2021-10-29 04:43:23,865 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 18 [2021-10-29 04:43:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:23,866 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2021-10-29 04:43:23,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2021-10-29 04:43:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 04:43:23,868 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:23,868 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:23,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:24,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:24,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:24,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:24,077 INFO L85 PathProgramCache]: Analyzing trace with hash -379603997, now seen corresponding path program 1 times [2021-10-29 04:43:24,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:24,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206006025] [2021-10-29 04:43:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:24,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:24,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:24,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:43:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:24,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:43:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:24,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:24,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:24,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206006025] [2021-10-29 04:43:24,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206006025] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:24,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:24,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:43:24,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141881063] [2021-10-29 04:43:24,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:43:24,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:43:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:43:24,466 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:24,481 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2021-10-29 04:43:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:43:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 04:43:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:24,483 INFO L225 Difference]: With dead ends: 78 [2021-10-29 04:43:24,483 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 04:43:24,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:43:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 04:43:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-29 04:43:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2021-10-29 04:43:24,491 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 19 [2021-10-29 04:43:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:24,491 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2021-10-29 04:43:24,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2021-10-29 04:43:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 04:43:24,505 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:24,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:24,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:24,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:24,728 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash -301457865, now seen corresponding path program 1 times [2021-10-29 04:43:24,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:24,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284322090] [2021-10-29 04:43:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:24,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:24,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:24,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:24,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:43:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:24,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:43:24,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:25,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:25,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:25,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284322090] [2021-10-29 04:43:25,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284322090] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:25,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:25,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 04:43:25,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848216994] [2021-10-29 04:43:25,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:43:25,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:43:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:43:25,161 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:25,215 INFO L93 Difference]: Finished difference Result 65 states and 95 transitions. [2021-10-29 04:43:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:43:25,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-29 04:43:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:25,218 INFO L225 Difference]: With dead ends: 65 [2021-10-29 04:43:25,218 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 04:43:25,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:43:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 04:43:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-29 04:43:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2021-10-29 04:43:25,226 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 24 [2021-10-29 04:43:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:25,227 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2021-10-29 04:43:25,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2021-10-29 04:43:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 04:43:25,228 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:25,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:25,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:25,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:25,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash -608954119, now seen corresponding path program 1 times [2021-10-29 04:43:25,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:25,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868289940] [2021-10-29 04:43:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:25,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:25,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:25,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:43:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:25,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:43:25,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:25,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:25,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:25,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868289940] [2021-10-29 04:43:25,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868289940] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:25,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:25,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 04:43:25,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418605921] [2021-10-29 04:43:25,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:43:25,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:43:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:43:25,814 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:25,889 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2021-10-29 04:43:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:43:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 04:43:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:25,894 INFO L225 Difference]: With dead ends: 87 [2021-10-29 04:43:25,894 INFO L226 Difference]: Without dead ends: 58 [2021-10-29 04:43:25,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:43:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-29 04:43:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-29 04:43:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 55 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2021-10-29 04:43:25,923 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 25 [2021-10-29 04:43:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:25,923 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2021-10-29 04:43:25,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2021-10-29 04:43:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-29 04:43:25,926 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:25,926 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:25,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:26,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:26,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash -584147931, now seen corresponding path program 1 times [2021-10-29 04:43:26,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:26,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432098995] [2021-10-29 04:43:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:26,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:26,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:26,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:26,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 04:43:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:26,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:43:26,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:26,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:26,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:26,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432098995] [2021-10-29 04:43:26,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432098995] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:26,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:26,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 04:43:26,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191762177] [2021-10-29 04:43:26,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:43:26,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:43:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:43:26,690 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:26,783 INFO L93 Difference]: Finished difference Result 254 states and 372 transitions. [2021-10-29 04:43:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:43:26,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-29 04:43:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:26,785 INFO L225 Difference]: With dead ends: 254 [2021-10-29 04:43:26,785 INFO L226 Difference]: Without dead ends: 205 [2021-10-29 04:43:26,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:43:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-29 04:43:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 97. [2021-10-29 04:43:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 96 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2021-10-29 04:43:26,824 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 31 [2021-10-29 04:43:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:26,825 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2021-10-29 04:43:26,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2021-10-29 04:43:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 04:43:26,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:26,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:26,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:27,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:27,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:27,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1078415005, now seen corresponding path program 1 times [2021-10-29 04:43:27,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:27,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036518548] [2021-10-29 04:43:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:27,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:27,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:27,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:27,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 04:43:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:27,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:43:27,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:27,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:27,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:27,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036518548] [2021-10-29 04:43:27,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036518548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:27,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:27,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 04:43:27,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151740613] [2021-10-29 04:43:27,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:43:27,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:43:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:43:27,638 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:27,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:27,767 INFO L93 Difference]: Finished difference Result 346 states and 493 transitions. [2021-10-29 04:43:27,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 04:43:27,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 04:43:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:27,770 INFO L225 Difference]: With dead ends: 346 [2021-10-29 04:43:27,770 INFO L226 Difference]: Without dead ends: 256 [2021-10-29 04:43:27,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:43:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-29 04:43:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 96. [2021-10-29 04:43:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4) internal successors, (133), 95 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 133 transitions. [2021-10-29 04:43:27,786 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 133 transitions. Word has length 32 [2021-10-29 04:43:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:27,786 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 133 transitions. [2021-10-29 04:43:27,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 133 transitions. [2021-10-29 04:43:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 04:43:27,788 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:27,788 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:27,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:28,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:28,001 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:28,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 144951296, now seen corresponding path program 1 times [2021-10-29 04:43:28,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:28,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338572326] [2021-10-29 04:43:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:28,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:28,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:28,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:28,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 04:43:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:28,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 04:43:28,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:28,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:28,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:28,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:28,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338572326] [2021-10-29 04:43:28,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338572326] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:28,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:28,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 04:43:28,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101028887] [2021-10-29 04:43:28,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:43:28,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:43:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:43:28,444 INFO L87 Difference]: Start difference. First operand 96 states and 133 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:28,505 INFO L93 Difference]: Finished difference Result 245 states and 340 transitions. [2021-10-29 04:43:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:43:28,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 04:43:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:28,507 INFO L225 Difference]: With dead ends: 245 [2021-10-29 04:43:28,507 INFO L226 Difference]: Without dead ends: 156 [2021-10-29 04:43:28,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:43:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-29 04:43:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 102. [2021-10-29 04:43:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.3762376237623761) internal successors, (139), 101 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 139 transitions. [2021-10-29 04:43:28,521 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 139 transitions. Word has length 32 [2021-10-29 04:43:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:28,521 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 139 transitions. [2021-10-29 04:43:28,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 139 transitions. [2021-10-29 04:43:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 04:43:28,522 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:28,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:28,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:28,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:28,736 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash 846015874, now seen corresponding path program 1 times [2021-10-29 04:43:28,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:28,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054414302] [2021-10-29 04:43:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:28,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:28,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:28,739 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:28,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 04:43:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:29,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 04:43:29,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:29,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:29,187 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:29,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054414302] [2021-10-29 04:43:29,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054414302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:29,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:29,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 04:43:29,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443135057] [2021-10-29 04:43:29,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:43:29,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:43:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:43:29,189 INFO L87 Difference]: Start difference. First operand 102 states and 139 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:29,255 INFO L93 Difference]: Finished difference Result 279 states and 379 transitions. [2021-10-29 04:43:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:43:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 04:43:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:29,258 INFO L225 Difference]: With dead ends: 279 [2021-10-29 04:43:29,258 INFO L226 Difference]: Without dead ends: 184 [2021-10-29 04:43:29,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:43:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-29 04:43:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 106. [2021-10-29 04:43:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.361904761904762) internal successors, (143), 105 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2021-10-29 04:43:29,275 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 143 transitions. Word has length 32 [2021-10-29 04:43:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:29,276 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 143 transitions. [2021-10-29 04:43:29,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 143 transitions. [2021-10-29 04:43:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 04:43:29,277 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:29,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:29,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:29,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:29,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 259209860, now seen corresponding path program 1 times [2021-10-29 04:43:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:29,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546508690] [2021-10-29 04:43:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:29,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:29,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:29,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:29,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 04:43:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:29,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:43:29,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:29,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:30,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:30,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546508690] [2021-10-29 04:43:30,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546508690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:30,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:30,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 04:43:30,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537286506] [2021-10-29 04:43:30,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:43:30,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:43:30,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:43:30,026 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:30,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:30,093 INFO L93 Difference]: Finished difference Result 338 states and 459 transitions. [2021-10-29 04:43:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:43:30,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 04:43:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:30,096 INFO L225 Difference]: With dead ends: 338 [2021-10-29 04:43:30,096 INFO L226 Difference]: Without dead ends: 239 [2021-10-29 04:43:30,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:43:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-29 04:43:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 189. [2021-10-29 04:43:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.351063829787234) internal successors, (254), 188 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 254 transitions. [2021-10-29 04:43:30,126 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 254 transitions. Word has length 32 [2021-10-29 04:43:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:30,127 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 254 transitions. [2021-10-29 04:43:30,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 254 transitions. [2021-10-29 04:43:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 04:43:30,128 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:30,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:30,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:30,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:30,343 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1203693628, now seen corresponding path program 1 times [2021-10-29 04:43:30,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:30,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688089585] [2021-10-29 04:43:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:30,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:30,347 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:30,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 04:43:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:30,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:43:30,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:30,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:30,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:30,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688089585] [2021-10-29 04:43:30,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688089585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:30,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:30,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 04:43:30,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741660787] [2021-10-29 04:43:30,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:43:30,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:43:30,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:43:30,972 INFO L87 Difference]: Start difference. First operand 189 states and 254 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:31,051 INFO L93 Difference]: Finished difference Result 307 states and 412 transitions. [2021-10-29 04:43:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:43:31,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-29 04:43:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:31,054 INFO L225 Difference]: With dead ends: 307 [2021-10-29 04:43:31,055 INFO L226 Difference]: Without dead ends: 305 [2021-10-29 04:43:31,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:43:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-10-29 04:43:31,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 239. [2021-10-29 04:43:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3781512605042017) internal successors, (328), 238 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 328 transitions. [2021-10-29 04:43:31,090 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 328 transitions. Word has length 33 [2021-10-29 04:43:31,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:31,090 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 328 transitions. [2021-10-29 04:43:31,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 328 transitions. [2021-10-29 04:43:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-29 04:43:31,091 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:31,092 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:31,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:31,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:31,306 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash -389004008, now seen corresponding path program 1 times [2021-10-29 04:43:31,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:31,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673556710] [2021-10-29 04:43:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:31,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:31,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:31,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:31,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 04:43:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:43:33,481 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:43:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:43:35,030 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:43:35,031 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:43:35,032 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:43:35,046 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:43:35,047 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:43:35,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:35,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:35,266 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:35,270 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:43:35,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:43:35 BoogieIcfgContainer [2021-10-29 04:43:35,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:43:35,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:43:35,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:43:35,437 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:43:35,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:23" (3/4) ... [2021-10-29 04:43:35,440 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:43:35,604 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:43:35,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:43:35,606 INFO L168 Benchmark]: Toolchain (without parser) took 16515.46 ms. Allocated memory was 54.5 MB in the beginning and 117.4 MB in the end (delta: 62.9 MB). Free memory was 30.2 MB in the beginning and 87.1 MB in the end (delta: -57.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,607 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:43:35,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.75 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.9 MB in the beginning and 53.9 MB in the end (delta: -24.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.65 ms. Allocated memory is still 75.5 MB. Free memory was 53.9 MB in the beginning and 51.0 MB in the end (delta: 2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:43:35,609 INFO L168 Benchmark]: Boogie Preprocessor took 101.93 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 48.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,609 INFO L168 Benchmark]: RCFGBuilder took 2902.00 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 44.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,610 INFO L168 Benchmark]: TraceAbstraction took 12356.96 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 44.4 MB in the beginning and 46.5 MB in the end (delta: -2.1 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,610 INFO L168 Benchmark]: Witness Printer took 167.48 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 46.5 MB in the beginning and 87.1 MB in the end (delta: -40.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 35.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 854.75 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.9 MB in the beginning and 53.9 MB in the end (delta: -24.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 120.65 ms. Allocated memory is still 75.5 MB. Free memory was 53.9 MB in the beginning and 51.0 MB in the end (delta: 2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.93 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 48.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2902.00 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 44.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12356.96 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 44.4 MB in the beginning and 46.5 MB in the end (delta: -2.1 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. * Witness Printer took 167.48 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 46.5 MB in the beginning and 87.1 MB in the end (delta: -40.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 259]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L161] int waterLevel = 1; [L162] int methaneLevelCritical = 0; [L265] int methAndRunningLastTime ; [L508] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L775] int pumpRunning = 0; [L776] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L133] int retValue_acc ; [L134] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L330] int retValue_acc ; [L333] retValue_acc = 1 [L334] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L140] tmp = valid_product() [L142] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L270] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L707] int splverifierCounter ; [L708] int tmp ; [L709] int tmp___0 ; [L710] int tmp___1 ; [L711] int tmp___2 ; [L714] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L716] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L718] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L724] tmp = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L179] COND TRUE waterLevel < 2 [L180] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L734] tmp___0 = __VERIFIER_nondet_int() [L736] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] COND FALSE !(\read(methaneLevelCritical)) [L194] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L744] tmp___2 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___2) [L930] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L789] COND TRUE \read(systemActive) [L811] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L814] COND TRUE ! pumpRunning [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; [L241] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND FALSE !(waterLevel < 2) [L248] retValue_acc = 0 [L249] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L816] tmp = isHighWaterLevel() [L818] COND TRUE \read(tmp) [L839] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L275] int tmp ; [L276] int tmp___0 ; [L200] int retValue_acc ; [L203] retValue_acc = methaneLevelCritical [L204] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L280] tmp = isMethaneLevelCritical() [L282] COND TRUE \read(tmp) [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L284] tmp___0 = isPumpRunning() [L286] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L287] COND FALSE !(\read(methAndRunningLastTime)) [L292] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L716] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L718] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L724] tmp = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L734] tmp___0 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L744] tmp___2 = __VERIFIER_nondet_int() [L746] COND TRUE \read(tmp___2) [L930] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] COND TRUE waterLevel > 0 [L168] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L789] COND TRUE \read(systemActive) [L811] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L814] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L275] int tmp ; [L276] int tmp___0 ; [L200] int retValue_acc ; [L203] retValue_acc = methaneLevelCritical [L204] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L280] tmp = isMethaneLevelCritical() [L282] COND TRUE \read(tmp) [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L284] tmp___0 = isPumpRunning() [L286] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L287] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L259] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 259]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 259]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 656 SDtfs, 729 SDslu, 1017 SDs, 0 SdLazy, 116 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 552 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=10, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 518 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 329 NumberOfCodeBlocks, 329 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 536 ConstructedInterpolants, 0 QuantifiedInterpolants, 920 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2070 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:43:35,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf930b97-df23-4068-83f3-576451488974/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...