./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs --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 89e971cc8a3720964c6cfefd0e6b99629a106cf0 ............................................................................................................................................ 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_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs --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 89e971cc8a3720964c6cfefd0e6b99629a106cf0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-5709675 [2021-10-16 02:30:56,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:30:56,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:30:56,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:30:56,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:30:56,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:30:56,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:30:56,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:30:56,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:30:56,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:30:56,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:30:56,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:30:56,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:30:56,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:30:56,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:30:56,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:30:56,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:30:56,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:30:56,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:30:56,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:30:56,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:30:56,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:30:56,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:30:56,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:30:56,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:30:56,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:30:56,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:30:56,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:30:56,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:30:56,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:30:56,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:30:56,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:30:56,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:30:56,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:30:56,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:30:56,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:30:56,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:30:56,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:30:56,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:30:56,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:30:56,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:30:56,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:30:56,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:30:56,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:30:56,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:30:56,633 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:30:56,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:30:56,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:30:56,634 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:30:56,634 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:30:56,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:30:56,642 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:30:56,644 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:30:56,644 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:30:56,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:30:56,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:30:56,645 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:30:56,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:30:56,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:30:56,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:30:56,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:30:56,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:30:56,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:30:56,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:30:56,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:30:56,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:30:56,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:30:56,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:30:56,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:30:56,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:30:56,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:30:56,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:30:56,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:56,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:30:56,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:30:56,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:30:56,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:30:56,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:30:56,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:30:56,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:30:56,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:30:56,657 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_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89e971cc8a3720964c6cfefd0e6b99629a106cf0 [2021-10-16 02:30:57,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:30:57,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:30:57,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:30:57,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:30:57,097 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:30:57,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2021-10-16 02:30:57,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/c837406e3/9f001372a89243e3b5b5788931595ccc/FLAG0fd16e631 [2021-10-16 02:30:57,911 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:30:57,912 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2021-10-16 02:30:57,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/c837406e3/9f001372a89243e3b5b5788931595ccc/FLAG0fd16e631 [2021-10-16 02:30:58,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/c837406e3/9f001372a89243e3b5b5788931595ccc [2021-10-16 02:30:58,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:30:58,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:30:58,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:58,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:30:58,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:30:58,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:58" (1/1) ... [2021-10-16 02:30:58,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4493ef9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:58, skipping insertion in model container [2021-10-16 02:30:58,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:58" (1/1) ... [2021-10-16 02:30:58,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:30:58,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:30:58,502 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_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c[2044,2057] [2021-10-16 02:30:58,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:58,720 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) [2021-10-16 02:30:58,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7dc07638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:58, skipping insertion in model container [2021-10-16 02:30:58,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:58,721 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:30:58,724 INFO L168 Benchmark]: Toolchain (without parser) took 528.38 ms. Allocated memory is still 117.4 MB. Free memory was 86.7 MB in the beginning and 88.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:58,725 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:30:58,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.23 ms. Allocated memory is still 117.4 MB. Free memory was 86.7 MB in the beginning and 88.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:58,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 117.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 525.23 ms. Allocated memory is still 117.4 MB. Free memory was 86.7 MB in the beginning and 88.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: 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-5709675 [2021-10-16 02:31:01,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:01,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:01,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:01,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:01,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:01,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:01,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:01,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:01,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:01,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:01,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:01,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:01,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:01,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:01,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:01,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:01,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:01,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:01,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:01,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:01,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:01,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:01,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:01,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:01,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:01,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:01,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:01,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:01,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:01,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:01,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:01,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:01,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:01,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:01,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:01,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:01,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:01,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:01,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:01,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:01,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:31:01,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:01,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:01,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:01,726 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:01,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:01,727 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:01,727 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:01,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:01,728 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:01,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:01,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:01,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:01,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:01,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:31:01,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:01,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:31:01,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:01,732 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:31:01,733 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:31:01,733 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:01,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:31:01,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:01,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:31:01,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:01,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:31:01,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:01,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:01,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:01,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:01,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:31:01,736 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:31:01,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:01,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:31:01,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:01,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:01,737 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_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89e971cc8a3720964c6cfefd0e6b99629a106cf0 [2021-10-16 02:31:02,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:02,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:02,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:02,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:02,261 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:02,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2021-10-16 02:31:02,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/396bcc348/efe5fbe12b6344078477e67620f04b6f/FLAGef3c519d1 [2021-10-16 02:31:03,143 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:03,143 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2021-10-16 02:31:03,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/396bcc348/efe5fbe12b6344078477e67620f04b6f/FLAGef3c519d1 [2021-10-16 02:31:03,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/data/396bcc348/efe5fbe12b6344078477e67620f04b6f [2021-10-16 02:31:03,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:03,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:03,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:03,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:03,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:03,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:03" (1/1) ... [2021-10-16 02:31:03,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736743a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:03, skipping insertion in model container [2021-10-16 02:31:03,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:03" (1/1) ... [2021-10-16 02:31:03,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:03,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:03,666 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_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c[2044,2057] [2021-10-16 02:31:03,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:03,862 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:31:03,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:03,880 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_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c[2044,2057] [2021-10-16 02:31:03,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:03,990 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:31:04,017 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_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c[2044,2057] [2021-10-16 02:31:04,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:04,116 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:31:04,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04 WrapperNode [2021-10-16 02:31:04,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:04,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:04,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:31:04,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:31:04,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:04,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:31:04,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:31:04,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:31:04,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:31:04,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:31:04,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:31:04,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:31:04,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (1/1) ... [2021-10-16 02:31:04,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:04,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:04,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:31:04,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:31:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:31:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:31:04,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:31:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:31:07,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:31:07,682 INFO L299 CfgBuilder]: Removed 276 assume(true) statements. [2021-10-16 02:31:07,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:07 BoogieIcfgContainer [2021-10-16 02:31:07,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:31:07,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:31:07,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:31:07,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:31:07,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:31:03" (1/3) ... [2021-10-16 02:31:07,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de282bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:07, skipping insertion in model container [2021-10-16 02:31:07,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:04" (2/3) ... [2021-10-16 02:31:07,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de282bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:07, skipping insertion in model container [2021-10-16 02:31:07,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:07" (3/3) ... [2021-10-16 02:31:07,696 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2021-10-16 02:31:07,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:31:07,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:31:07,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:31:07,791 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:31:07,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:31:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 188 states have internal predecessors, (288), 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) [2021-10-16 02:31:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:31:07,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:07,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:07,829 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:07,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2002794138, now seen corresponding path program 1 times [2021-10-16 02:31:07,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:07,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797717800] [2021-10-16 02:31:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:07,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:07,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:07,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:31:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:08,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:31:08,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:08,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:08,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:08,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797717800] [2021-10-16 02:31:08,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797717800] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:08,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:08,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:31:08,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665608076] [2021-10-16 02:31:08,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:31:08,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:31:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:31:08,387 INFO L87 Difference]: Start difference. First operand has 189 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 188 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:08,449 INFO L93 Difference]: Finished difference Result 372 states and 569 transitions. [2021-10-16 02:31:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:31:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 02:31:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:08,465 INFO L225 Difference]: With dead ends: 372 [2021-10-16 02:31:08,465 INFO L226 Difference]: Without dead ends: 185 [2021-10-16 02:31:08,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:31:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-16 02:31:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-10-16 02:31:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 182 states have (on average 1.5164835164835164) internal successors, (276), 184 states have internal predecessors, (276), 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) [2021-10-16 02:31:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2021-10-16 02:31:08,522 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2021-10-16 02:31:08,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:08,523 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2021-10-16 02:31:08,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2021-10-16 02:31:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:31:08,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:08,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:08,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:08,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:08,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:08,745 INFO L82 PathProgramCache]: Analyzing trace with hash 956037241, now seen corresponding path program 1 times [2021-10-16 02:31:08,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:08,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015603] [2021-10-16 02:31:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:08,747 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:08,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:08,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:31:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:08,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:09,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:09,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:09,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:09,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015603] [2021-10-16 02:31:09,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:09,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:09,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:31:09,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364716118] [2021-10-16 02:31:09,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:09,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:09,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:09,181 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:09,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:09,216 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2021-10-16 02:31:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:09,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:31:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:09,218 INFO L225 Difference]: With dead ends: 185 [2021-10-16 02:31:09,218 INFO L226 Difference]: Without dead ends: 71 [2021-10-16 02:31:09,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-16 02:31:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-16 02:31:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5) internal successors, (105), 70 states have internal predecessors, (105), 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) [2021-10-16 02:31:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2021-10-16 02:31:09,229 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2021-10-16 02:31:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:09,230 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2021-10-16 02:31:09,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2021-10-16 02:31:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:31:09,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:09,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:09,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:09,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:09,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:09,453 INFO L82 PathProgramCache]: Analyzing trace with hash 748559286, now seen corresponding path program 1 times [2021-10-16 02:31:09,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:09,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089940542] [2021-10-16 02:31:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:09,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:09,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:09,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:09,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:31:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:09,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:09,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:09,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:09,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:09,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089940542] [2021-10-16 02:31:09,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089940542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:09,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:09,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:31:09,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590212832] [2021-10-16 02:31:09,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:09,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:09,956 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-16 02:31:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:09,989 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2021-10-16 02:31:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-16 02:31:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:09,994 INFO L225 Difference]: With dead ends: 136 [2021-10-16 02:31:09,994 INFO L226 Difference]: Without dead ends: 71 [2021-10-16 02:31:09,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-16 02:31:10,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-16 02:31:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 70 states have internal predecessors, (104), 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) [2021-10-16 02:31:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2021-10-16 02:31:10,007 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2021-10-16 02:31:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:10,007 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2021-10-16 02:31:10,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-16 02:31:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2021-10-16 02:31:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:31:10,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:10,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:10,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:10,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:10,224 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash -682519882, now seen corresponding path program 1 times [2021-10-16 02:31:10,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:10,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847293667] [2021-10-16 02:31:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:10,226 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:10,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:10,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:31:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:10,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:10,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:10,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:10,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:10,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847293667] [2021-10-16 02:31:10,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847293667] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:10,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:10,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:31:10,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127057746] [2021-10-16 02:31:10,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:31:10,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:31:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:10,683 INFO L87 Difference]: Start difference. First operand 71 states and 104 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) [2021-10-16 02:31:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:10,775 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2021-10-16 02:31:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:31:10,776 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 [2021-10-16 02:31:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:10,779 INFO L225 Difference]: With dead ends: 145 [2021-10-16 02:31:10,779 INFO L226 Difference]: Without dead ends: 80 [2021-10-16 02:31:10,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:31:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-16 02:31:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-10-16 02:31:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 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) [2021-10-16 02:31:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2021-10-16 02:31:10,799 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2021-10-16 02:31:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:10,799 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-16 02:31:10,799 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) [2021-10-16 02:31:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2021-10-16 02:31:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:31:10,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:10,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:10,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:11,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,021 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1459548505, now seen corresponding path program 1 times [2021-10-16 02:31:11,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:11,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331593506] [2021-10-16 02:31:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:11,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:11,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:11,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:31:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:11,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:31:11,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:11,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:11,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:11,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331593506] [2021-10-16 02:31:11,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331593506] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:11,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:11,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:31:11,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757361290] [2021-10-16 02:31:11,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:31:11,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:31:11,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:31:11,494 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:11,617 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2021-10-16 02:31:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:31:11,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-16 02:31:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:11,620 INFO L225 Difference]: With dead ends: 204 [2021-10-16 02:31:11,620 INFO L226 Difference]: Without dead ends: 132 [2021-10-16 02:31:11,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:31:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-16 02:31:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2021-10-16 02:31:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 86 states have internal predecessors, (119), 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) [2021-10-16 02:31:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2021-10-16 02:31:11,642 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2021-10-16 02:31:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:11,643 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2021-10-16 02:31:11,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2021-10-16 02:31:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:31:11,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:11,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:11,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:11,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:11,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1202962538, now seen corresponding path program 1 times [2021-10-16 02:31:11,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:11,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461717076] [2021-10-16 02:31:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:11,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:11,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:11,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:11,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:31:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:12,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:31:12,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:12,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:12,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:12,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461717076] [2021-10-16 02:31:12,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461717076] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:12,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:12,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:31:12,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112725625] [2021-10-16 02:31:12,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:31:12,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:12,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:31:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:31:12,450 INFO L87 Difference]: Start difference. First operand 87 states and 119 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) [2021-10-16 02:31:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:12,602 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2021-10-16 02:31:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:31:12,602 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 [2021-10-16 02:31:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:12,606 INFO L225 Difference]: With dead ends: 431 [2021-10-16 02:31:12,606 INFO L226 Difference]: Without dead ends: 350 [2021-10-16 02:31:12,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:31:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-16 02:31:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2021-10-16 02:31:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.3726708074534162) internal successors, (221), 161 states have internal predecessors, (221), 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) [2021-10-16 02:31:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2021-10-16 02:31:12,656 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2021-10-16 02:31:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:12,656 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2021-10-16 02:31:12,656 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) [2021-10-16 02:31:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2021-10-16 02:31:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:31:12,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:12,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:12,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:12,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:12,873 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash 552949620, now seen corresponding path program 1 times [2021-10-16 02:31:12,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:12,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354067834] [2021-10-16 02:31:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:12,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:12,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:12,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:12,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:31:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:13,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:31:13,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:13,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:13,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:13,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354067834] [2021-10-16 02:31:13,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354067834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:13,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:13,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:31:13,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536502851] [2021-10-16 02:31:13,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:31:13,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:31:13,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:31:13,438 INFO L87 Difference]: Start difference. First operand 162 states and 221 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) [2021-10-16 02:31:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:13,698 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2021-10-16 02:31:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:31:13,699 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 [2021-10-16 02:31:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:13,702 INFO L225 Difference]: With dead ends: 470 [2021-10-16 02:31:13,703 INFO L226 Difference]: Without dead ends: 468 [2021-10-16 02:31:13,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:31:13,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-16 02:31:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2021-10-16 02:31:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 161 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:31:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2021-10-16 02:31:13,732 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2021-10-16 02:31:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:13,734 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2021-10-16 02:31:13,734 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) [2021-10-16 02:31:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2021-10-16 02:31:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:31:13,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:13,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:13,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:13,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:13,958 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1792378863, now seen corresponding path program 1 times [2021-10-16 02:31:13,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:13,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097806880] [2021-10-16 02:31:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:13,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:13,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:13,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:31:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:14,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:31:14,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:14,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:14,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:14,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097806880] [2021-10-16 02:31:14,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097806880] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:14,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:14,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:31:14,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384229084] [2021-10-16 02:31:14,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:31:14,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:14,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:31:14,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:31:14,440 INFO L87 Difference]: Start difference. First operand 162 states and 220 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) [2021-10-16 02:31:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:14,527 INFO L93 Difference]: Finished difference Result 428 states and 574 transitions. [2021-10-16 02:31:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:31:14,528 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 [2021-10-16 02:31:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:14,530 INFO L225 Difference]: With dead ends: 428 [2021-10-16 02:31:14,530 INFO L226 Difference]: Without dead ends: 272 [2021-10-16 02:31:14,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:31:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-16 02:31:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 174. [2021-10-16 02:31:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 173 states have internal predecessors, (232), 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) [2021-10-16 02:31:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2021-10-16 02:31:14,553 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2021-10-16 02:31:14,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:14,554 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2021-10-16 02:31:14,554 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) [2021-10-16 02:31:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2021-10-16 02:31:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:31:14,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:14,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:14,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:14,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:14,769 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544301, now seen corresponding path program 1 times [2021-10-16 02:31:14,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:14,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96393870] [2021-10-16 02:31:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:14,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:14,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:14,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:14,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:31:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:15,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:31:15,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:15,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:15,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:15,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96393870] [2021-10-16 02:31:15,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96393870] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:15,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:15,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:31:15,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273100653] [2021-10-16 02:31:15,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:31:15,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:31:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:15,325 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-10-16 02:31:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:15,429 INFO L93 Difference]: Finished difference Result 520 states and 696 transitions. [2021-10-16 02:31:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:31:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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 [2021-10-16 02:31:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:15,432 INFO L225 Difference]: With dead ends: 520 [2021-10-16 02:31:15,433 INFO L226 Difference]: Without dead ends: 352 [2021-10-16 02:31:15,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:31:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-16 02:31:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 298. [2021-10-16 02:31:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.3232323232323233) internal successors, (393), 297 states have internal predecessors, (393), 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) [2021-10-16 02:31:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 393 transitions. [2021-10-16 02:31:15,471 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 393 transitions. Word has length 32 [2021-10-16 02:31:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:15,472 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 393 transitions. [2021-10-16 02:31:15,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-10-16 02:31:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 393 transitions. [2021-10-16 02:31:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:31:15,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:15,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:15,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:15,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:15,688 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash 979497771, now seen corresponding path program 1 times [2021-10-16 02:31:15,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:15,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784139798] [2021-10-16 02:31:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:15,689 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:15,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:15,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:31:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:31:17,340 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:31:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:31:19,110 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:31:19,111 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:31:19,112 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:31:19,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:31:19,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:31:19,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:19,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:19,343 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:31:19,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:31:19 BoogieIcfgContainer [2021-10-16 02:31:19,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:31:19,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:31:19,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:31:19,534 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:31:19,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:07" (3/4) ... [2021-10-16 02:31:19,537 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:31:19,689 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:31:19,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:31:19,691 INFO L168 Benchmark]: Toolchain (without parser) took 16269.50 ms. Allocated memory was 60.8 MB in the beginning and 115.3 MB in the end (delta: 54.5 MB). Free memory was 39.7 MB in the beginning and 81.0 MB in the end (delta: -41.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:19,691 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:19,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.52 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 30.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:19,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 147.83 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 26.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:19,692 INFO L168 Benchmark]: Boogie Preprocessor took 113.47 ms. Allocated memory was 60.8 MB in the beginning and 90.2 MB in the end (delta: 29.4 MB). Free memory was 26.0 MB in the beginning and 69.8 MB in the end (delta: -43.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:19,693 INFO L168 Benchmark]: RCFGBuilder took 3304.28 ms. Allocated memory is still 90.2 MB. Free memory was 69.8 MB in the beginning and 59.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:19,693 INFO L168 Benchmark]: TraceAbstraction took 11844.92 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 59.3 MB in the beginning and 36.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:19,694 INFO L168 Benchmark]: Witness Printer took 155.72 ms. Allocated memory is still 115.3 MB. Free memory was 36.3 MB in the beginning and 81.0 MB in the end (delta: -44.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:19,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 695.52 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 30.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 147.83 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 26.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 113.47 ms. Allocated memory was 60.8 MB in the beginning and 90.2 MB in the end (delta: 29.4 MB). Free memory was 26.0 MB in the beginning and 69.8 MB in the end (delta: -43.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3304.28 ms. Allocated memory is still 90.2 MB. Free memory was 69.8 MB in the beginning and 59.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11844.92 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 59.3 MB in the beginning and 36.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. * Witness Printer took 155.72 ms. Allocated memory is still 115.3 MB. Free memory was 36.3 MB in the beginning and 81.0 MB in the end (delta: -44.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 83]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L454] int cleanupTimeShifts = 4; [L564] int pumpRunning = 0; [L565] int systemActive = 1; [L888] int waterLevel = 1; [L889] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L535] int retValue_acc ; [L536] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L878] int retValue_acc ; [L881] retValue_acc = 1 [L882] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L542] tmp = valid_product() [L544] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L788] int splverifierCounter ; [L789] int tmp ; [L790] int tmp___0 ; [L791] int tmp___1 ; [L792] int tmp___2 ; [L795] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L797] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L799] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L805] tmp = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] COND TRUE waterLevel < 2 [L907] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L815] tmp___0 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L918] COND FALSE !(\read(methaneLevelCritical)) [L921] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L825] tmp___2 = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L571] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L578] COND TRUE \read(systemActive) [L652] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L655] COND FALSE !(\read(pumpRunning)) [L626] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] COND FALSE !(\read(pumpRunning)) [L600] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L603] COND TRUE ! pumpRunning [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L968] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L971] COND FALSE !(waterLevel < 2) [L975] retValue_acc = 0 [L976] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L605] tmp = isHighWaterLevel() [L607] COND TRUE \read(tmp) [L680] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L54] int tmp ; [L55] int tmp___0 ; [L927] int retValue_acc ; [L930] retValue_acc = methaneLevelCritical [L931] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = isMethaneLevelCritical() [L61] COND TRUE \read(tmp) [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L83] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 83]: 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: 83]: 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, 189 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11563.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 28.8ms, AutomataDifference: 1049.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1163 SDtfs, 1385 SDslu, 1395 SDs, 0 SdLazy, 212 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 345.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 224.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 234.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 693 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 261.9ms SsaConstructionTime, 2655.3ms SatisfiabilityAnalysisTime, 2089.5ms InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 458 ConstructedInterpolants, 0 QuantifiedInterpolants, 827 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1830 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:31:19,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e93323-11ac-4bea-8b43-0ff8cab59ff1/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...