./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/alt_test.i --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_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/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_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/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_01876dea-add5-4316-b5a6-59427a5c288a/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 f0dc10cff0d4b9b6abcb3203593853156d0ff603 ............................................................................................................................................ 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_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/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_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/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_01876dea-add5-4316-b5a6-59427a5c288a/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 f0dc10cff0d4b9b6abcb3203593853156d0ff603 ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:58:38,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:58:38,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:58:38,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:58:38,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:58:38,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:58:38,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:58:38,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:58:38,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:58:38,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:58:38,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:58:38,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:58:38,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:58:38,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:58:38,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:58:38,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:58:38,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:58:38,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:58:38,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:58:38,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:58:38,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:58:38,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:58:38,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:58:38,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:58:38,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:58:38,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:58:38,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:58:38,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:58:38,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:58:38,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:58:38,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:58:38,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:58:38,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:58:38,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:58:38,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:58:38,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:58:38,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:58:38,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:58:38,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:58:38,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:58:38,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:58:38,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:58:38,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:58:38,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:58:38,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:58:38,615 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:58:38,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:58:38,615 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:58:38,616 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:58:38,616 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:58:38,616 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:58:38,616 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:58:38,617 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:58:38,617 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:58:38,617 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:58:38,618 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:58:38,618 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:58:38,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:58:38,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:58:38,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:58:38,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:58:38,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:58:38,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:58:38,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:58:38,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:58:38,621 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:58:38,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:58:38,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:58:38,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:58:38,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:58:38,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:58:38,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:58:38,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:58:38,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:58:38,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:58:38,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:58:38,625 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:58:38,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:58:38,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:58:38,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:58:38,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:58:38,626 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_01876dea-add5-4316-b5a6-59427a5c288a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0dc10cff0d4b9b6abcb3203593853156d0ff603 [2021-10-16 02:58:39,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:58:39,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:58:39,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:58:39,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:58:39,059 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:58:39,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-regression/alt_test.i [2021-10-16 02:58:39,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/c29b473ec/096d0b409ac043289191077bc927f200/FLAG767ff32a4 [2021-10-16 02:58:39,837 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:58:39,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/sv-benchmarks/c/ldv-regression/alt_test.i [2021-10-16 02:58:39,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/c29b473ec/096d0b409ac043289191077bc927f200/FLAG767ff32a4 [2021-10-16 02:58:40,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/c29b473ec/096d0b409ac043289191077bc927f200 [2021-10-16 02:58:40,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:58:40,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:58:40,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:58:40,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:58:40,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:58:40,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:58:40" (1/1) ... [2021-10-16 02:58:40,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a88f526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:40, skipping insertion in model container [2021-10-16 02:58:40,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:58:40" (1/1) ... [2021-10-16 02:58:40,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:58:40,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:58:40,586 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_01876dea-add5-4316-b5a6-59427a5c288a/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2021-10-16 02:58:40,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:58:40,632 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 02:58:40,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2712ce66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:40, skipping insertion in model container [2021-10-16 02:58:40,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:58:40,635 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:58:40,638 INFO L168 Benchmark]: Toolchain (without parser) took 543.29 ms. Allocated memory is still 113.2 MB. Free memory was 69.8 MB in the beginning and 86.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:40,640 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory is still 87.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:58:40,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.78 ms. Allocated memory is still 113.2 MB. Free memory was 69.6 MB in the beginning and 86.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:40,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory is still 87.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 539.78 ms. Allocated memory is still 113.2 MB. Free memory was 69.6 MB in the beginning and 86.8 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 523]: 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 02:58:43,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:58:43,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:58:43,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:58:43,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:58:43,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:58:43,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:58:43,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:58:43,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:58:43,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:58:43,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:58:43,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:58:43,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:58:43,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:58:43,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:58:43,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:58:43,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:58:43,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:58:43,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:58:43,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:58:43,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:58:43,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:58:43,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:58:43,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:58:43,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:58:43,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:58:43,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:58:43,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:58:43,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:58:43,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:58:43,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:58:43,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:58:43,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:58:43,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:58:43,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:58:43,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:58:43,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:58:43,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:58:43,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:58:43,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:58:43,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:58:43,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:58:43,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:58:43,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:58:43,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:58:43,815 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:58:43,815 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:58:43,815 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:58:43,815 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:58:43,816 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:58:43,816 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:58:43,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:58:43,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:58:43,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:58:43,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:58:43,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:58:43,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:58:43,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:58:43,822 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:58:43,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:58:43,822 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:58:43,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:58:43,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:58:43,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:58:43,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:58:43,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:58:43,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:58:43,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:58:43,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:58:43,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:58:43,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:58:43,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:58:43,844 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:58:43,844 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:58:43,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:58:43,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:58:43,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:58:43,845 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_01876dea-add5-4316-b5a6-59427a5c288a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0dc10cff0d4b9b6abcb3203593853156d0ff603 [2021-10-16 02:58:44,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:58:44,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:58:44,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:58:44,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:58:44,426 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:58:44,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-regression/alt_test.i [2021-10-16 02:58:44,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/8b10b2cf6/9eef5d76a4674071961361ab40af2b94/FLAGc271b7b77 [2021-10-16 02:58:45,283 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:58:45,284 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/sv-benchmarks/c/ldv-regression/alt_test.i [2021-10-16 02:58:45,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/8b10b2cf6/9eef5d76a4674071961361ab40af2b94/FLAGc271b7b77 [2021-10-16 02:58:45,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/data/8b10b2cf6/9eef5d76a4674071961361ab40af2b94 [2021-10-16 02:58:45,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:58:45,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:58:45,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:58:45,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:58:45,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:58:45,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:58:45" (1/1) ... [2021-10-16 02:58:45,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65532397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:45, skipping insertion in model container [2021-10-16 02:58:45,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:58:45" (1/1) ... [2021-10-16 02:58:45,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:58:45,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:58:45,958 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_01876dea-add5-4316-b5a6-59427a5c288a/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2021-10-16 02:58:46,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:58:46,044 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:58:46,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:58:46,126 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_01876dea-add5-4316-b5a6-59427a5c288a/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2021-10-16 02:58:46,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:58:46,150 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:58:46,227 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_01876dea-add5-4316-b5a6-59427a5c288a/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2021-10-16 02:58:46,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:58:46,270 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:58:46,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46 WrapperNode [2021-10-16 02:58:46,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:58:46,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:58:46,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:58:46,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:58:46,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:58:46,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:58:46,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:58:46,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:58:46,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:58:46,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:58:46,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:58:46,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:58:46,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (1/1) ... [2021-10-16 02:58:46,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:58:46,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:58:46,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:58:46,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:58:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:58:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:58:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:58:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:58:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:58:46,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:58:46,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:58:46,943 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-16 02:58:46,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:58:46 BoogieIcfgContainer [2021-10-16 02:58:46,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:58:46,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:58:46,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:58:46,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:58:46,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:58:45" (1/3) ... [2021-10-16 02:58:46,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:58:46, skipping insertion in model container [2021-10-16 02:58:46,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:58:46" (2/3) ... [2021-10-16 02:58:46,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530c49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:58:46, skipping insertion in model container [2021-10-16 02:58:46,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:58:46" (3/3) ... [2021-10-16 02:58:46,960 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2021-10-16 02:58:46,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:58:46,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:58:47,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:58:47,072 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 02:58:47,072 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:58:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:58:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:58:47,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:58:47,111 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:58:47,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:58:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:58:47,122 INFO L82 PathProgramCache]: Analyzing trace with hash 119352108, now seen corresponding path program 1 times [2021-10-16 02:58:47,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:58:47,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983477019] [2021-10-16 02:58:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:58:47,141 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:58:47,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:58:47,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:58:47,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:58:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:58:47,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:58:47,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:58:47,447 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 02:58:47,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:58:47,520 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 02:58:47,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:58:47,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983477019] [2021-10-16 02:58:47,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983477019] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:58:47,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:58:47,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:58:47,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827296235] [2021-10-16 02:58:47,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:58:47,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:58:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:58:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:58:47,564 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 02:58:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:58:47,622 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-10-16 02:58:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:58:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-10-16 02:58:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:58:47,636 INFO L225 Difference]: With dead ends: 39 [2021-10-16 02:58:47,636 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:58:47,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:58:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:58:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-16 02:58:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 02:58:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-16 02:58:47,687 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2021-10-16 02:58:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:58:47,688 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-16 02:58:47,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 02:58:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-16 02:58:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:58:47,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:58:47,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:58:47,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:58:47,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:58:47,906 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:58:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:58:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash 176610410, now seen corresponding path program 1 times [2021-10-16 02:58:47,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:58:47,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779799333] [2021-10-16 02:58:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:58:47,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:58:47,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:58:47,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:58:47,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:58:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:58:48,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:58:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:58:48,103 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 02:58:48,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:58:48,132 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 02:58:48,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:58:48,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779799333] [2021-10-16 02:58:48,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779799333] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:58:48,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:58:48,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:58:48,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179620076] [2021-10-16 02:58:48,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:58:48,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:58:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:58:48,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:58:48,138 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 02:58:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:58:48,145 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-10-16 02:58:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:58:48,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-10-16 02:58:48,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:58:48,147 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:58:48,147 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 02:58:48,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:58:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 02:58:48,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 02:58:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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 02:58:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-16 02:58:48,152 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-10-16 02:58:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:58:48,153 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-16 02:58:48,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 02:58:48,175 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-16 02:58:48,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:58:48,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:58:48,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:58:48,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:58:48,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:58:48,396 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:58:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:58:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash -262109109, now seen corresponding path program 1 times [2021-10-16 02:58:48,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:58:48,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801660134] [2021-10-16 02:58:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:58:48,399 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:58:48,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:58:48,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:58:48,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:58:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:58:48,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:58:48,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:58:48,633 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 02:58:48,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:58:48,726 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 02:58:48,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:58:48,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801660134] [2021-10-16 02:58:48,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801660134] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:58:48,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:58:48,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:58:48,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168748880] [2021-10-16 02:58:48,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:58:48,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:58:48,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:58:48,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:58:48,732 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 02:58:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:58:48,786 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-16 02:58:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:58:48,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2021-10-16 02:58:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:58:48,788 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:58:48,788 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 02:58:48,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:58:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 02:58:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 02:58:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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 02:58:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-16 02:58:48,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2021-10-16 02:58:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:58:48,794 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-16 02:58:48,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 02:58:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-16 02:58:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:58:48,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:58:48,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:58:48,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:58:49,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:58:49,011 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:58:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:58:49,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1912419270, now seen corresponding path program 1 times [2021-10-16 02:58:49,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:58:49,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464064305] [2021-10-16 02:58:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:58:49,014 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:58:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:58:49,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:58:49,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:58:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:58:49,183 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:58:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:58:49,293 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:58:49,301 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:58:49,303 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:58:49,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:58:49,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:58:49,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:58:49,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:58:49,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:58:49 BoogieIcfgContainer [2021-10-16 02:58:49,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:58:49,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:58:49,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:58:49,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:58:49,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:58:46" (3/4) ... [2021-10-16 02:58:49,584 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:58:49,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:58:49,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:58:49,673 INFO L168 Benchmark]: Toolchain (without parser) took 4115.89 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 58.2 MB in the beginning and 47.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:49,674 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:58:49,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.82 ms. Allocated memory is still 73.4 MB. Free memory was 58.0 MB in the beginning and 48.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:49,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.47 ms. Allocated memory is still 73.4 MB. Free memory was 48.4 MB in the beginning and 46.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:49,679 INFO L168 Benchmark]: Boogie Preprocessor took 78.12 ms. Allocated memory is still 73.4 MB. Free memory was 46.5 MB in the beginning and 45.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:49,681 INFO L168 Benchmark]: RCFGBuilder took 537.59 ms. Allocated memory is still 73.4 MB. Free memory was 45.1 MB in the beginning and 34.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:49,682 INFO L168 Benchmark]: TraceAbstraction took 2630.45 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 34.0 MB in the beginning and 49.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.2 kB. Max. memory is 16.1 GB. [2021-10-16 02:58:49,683 INFO L168 Benchmark]: Witness Printer took 90.73 ms. Allocated memory is still 88.1 MB. Free memory was 49.8 MB in the beginning and 47.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:58:49,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 73.4 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 713.82 ms. Allocated memory is still 73.4 MB. Free memory was 58.0 MB in the beginning and 48.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.47 ms. Allocated memory is still 73.4 MB. Free memory was 48.4 MB in the beginning and 46.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.12 ms. Allocated memory is still 73.4 MB. Free memory was 46.5 MB in the beginning and 45.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 537.59 ms. Allocated memory is still 73.4 MB. Free memory was 45.1 MB in the beginning and 34.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2630.45 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 34.0 MB in the beginning and 49.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.2 kB. Max. memory is 16.1 GB. * Witness Printer took 90.73 ms. Allocated memory is still 88.1 MB. Free memory was 49.8 MB in the beginning and 47.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 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: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L518] int globalState = 0; VAL [globalState=0] [L529] void *retVal = malloc(size); [L530] COND TRUE retVal != ((void *)0) [L531] globalState=1 VAL [globalState=1] [L532] return retVal; VAL [globalState=1] [L523] int *a = (int*) l_malloc(sizeof(int)); [L535] COND TRUE ptr!=((void *)0) VAL [globalState=1] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=1] [L536] globalState = 0 [L535] COND TRUE ptr!=((void *)0) VAL [globalState=0] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L516] reach_error() VAL [globalState=0] - UnprovableResult [Line: 516]: 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, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2452.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 26.8ms, AutomataDifference: 169.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 33 SDslu, 21 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 84.9ms SsaConstructionTime, 165.4ms SatisfiabilityAnalysisTime, 546.3ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 4 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 02:58:49,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01876dea-add5-4316-b5a6-59427a5c288a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...