./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test.i -s /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan --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-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test.i -s /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan --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 0.2.0-7b2dab5 [2020-12-09 08:28:32,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:28:32,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:28:32,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:28:32,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:28:32,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:28:32,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:28:32,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:28:32,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:28:32,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:28:32,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:28:32,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:28:32,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:28:32,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:28:32,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:28:32,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:28:32,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:28:32,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:28:32,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:28:32,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:28:32,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:28:32,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:28:32,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:28:32,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:28:32,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:28:32,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:28:32,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:28:32,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:28:32,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:28:32,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:28:32,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:28:32,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:28:32,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:28:32,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:28:32,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:28:32,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:28:32,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:28:32,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:28:32,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:28:32,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:28:32,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:28:32,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:28:32,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:28:32,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:28:32,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:28:32,943 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:28:32,943 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:28:32,943 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:28:32,943 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:28:32,943 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:28:32,943 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:28:32,943 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:28:32,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:28:32,944 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:28:32,944 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:28:32,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:28:32,944 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:28:32,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:28:32,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:28:32,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:28:32,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:28:32,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:28:32,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:28:32,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:28:32,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:28:32,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:28:32,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:28:32,946 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:28:32,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:28:32,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:28:32,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:28:32,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:28:32,947 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-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0dc10cff0d4b9b6abcb3203593853156d0ff603 [2020-12-09 08:28:33,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:28:33,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:28:33,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:28:33,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:28:33,153 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:28:33,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/../../sv-benchmarks/c/ldv-regression/alt_test.i [2020-12-09 08:28:33,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/d12608a6a/3559a02133f34c309fa8679ee794779b/FLAG12e63cdd0 [2020-12-09 08:28:33,583 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:28:33,584 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/sv-benchmarks/c/ldv-regression/alt_test.i [2020-12-09 08:28:33,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/d12608a6a/3559a02133f34c309fa8679ee794779b/FLAG12e63cdd0 [2020-12-09 08:28:33,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/d12608a6a/3559a02133f34c309fa8679ee794779b [2020-12-09 08:28:33,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:28:33,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:28:33,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:28:33,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:28:33,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:28:33,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:28:33" (1/1) ... [2020-12-09 08:28:33,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626ed3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:33, skipping insertion in model container [2020-12-09 08:28:33,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:28:33" (1/1) ... [2020-12-09 08:28:33,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:28:34,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:28:34,197 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2020-12-09 08:28:34,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:28:34,213 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) [2020-12-09 08:28:34,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@478e301b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:34, skipping insertion in model container [2020-12-09 08:28:34,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:28:34,214 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 08:28:34,215 INFO L168 Benchmark]: Toolchain (without parser) took 236.15 ms. Allocated memory is still 96.5 MB. Free memory was 55.3 MB in the beginning and 70.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:34,216 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 72.7 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:28:34,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.29 ms. Allocated memory is still 96.5 MB. Free memory was 55.2 MB in the beginning and 70.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:34,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 72.7 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.29 ms. Allocated memory is still 96.5 MB. Free memory was 55.2 MB in the beginning and 70.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 9.4 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 0.2.0-7b2dab5 [2020-12-09 08:28:35,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:28:35,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:28:35,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:28:35,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:28:35,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:28:35,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:28:35,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:28:35,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:28:35,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:28:35,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:28:35,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:28:35,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:28:35,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:28:35,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:28:35,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:28:35,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:28:35,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:28:35,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:28:35,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:28:35,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:28:35,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:28:35,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:28:35,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:28:35,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:28:35,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:28:35,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:28:35,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:28:35,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:28:35,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:28:35,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:28:35,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:28:35,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:28:35,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:28:35,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:28:35,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:28:35,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:28:35,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:28:35,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:28:35,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:28:35,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:28:35,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 08:28:35,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:28:35,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:28:35,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:28:35,547 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:28:35,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:28:35,548 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:28:35,548 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:28:35,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:28:35,548 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:28:35,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 08:28:35,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 08:28:35,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:28:35,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:28:35,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:28:35,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:28:35,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:28:35,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 08:28:35,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:28:35,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:28:35,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:28:35,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:28:35,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:28:35,557 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 08:28:35,557 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 08:28:35,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:28:35,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:28:35,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:28:35,558 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-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0dc10cff0d4b9b6abcb3203593853156d0ff603 [2020-12-09 08:28:35,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:28:35,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:28:35,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:28:35,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:28:35,796 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:28:35,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/../../sv-benchmarks/c/ldv-regression/alt_test.i [2020-12-09 08:28:35,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/3b92a0d88/79511124638e4bd098177f5014f512f5/FLAG329ad023c [2020-12-09 08:28:36,262 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:28:36,262 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/sv-benchmarks/c/ldv-regression/alt_test.i [2020-12-09 08:28:36,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/3b92a0d88/79511124638e4bd098177f5014f512f5/FLAG329ad023c [2020-12-09 08:28:36,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/data/3b92a0d88/79511124638e4bd098177f5014f512f5 [2020-12-09 08:28:36,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:28:36,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:28:36,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:28:36,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:28:36,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:28:36,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d848a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36, skipping insertion in model container [2020-12-09 08:28:36,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:28:36,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:28:36,534 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2020-12-09 08:28:36,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:28:36,556 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 08:28:36,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:28:36,591 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2020-12-09 08:28:36,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:28:36,597 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:28:36,626 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/sv-benchmarks/c/ldv-regression/alt_test.i[22285,22298] [2020-12-09 08:28:36,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:28:36,676 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:28:36,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36 WrapperNode [2020-12-09 08:28:36,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:28:36,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:28:36,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:28:36,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:28:36,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:28:36,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:28:36,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:28:36,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:28:36,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... [2020-12-09 08:28:36,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:28:36,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:28:36,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:28:36,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:28:36,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:28:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 08:28:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:28:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:28:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 08:28:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:28:36,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:28:36,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:28:36,983 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 08:28:36,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:28:36 BoogieIcfgContainer [2020-12-09 08:28:36,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:28:36,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:28:36,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:28:36,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:28:36,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:28:36" (1/3) ... [2020-12-09 08:28:36,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5f3435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:28:36, skipping insertion in model container [2020-12-09 08:28:36,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:28:36" (2/3) ... [2020-12-09 08:28:36,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5f3435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:28:36, skipping insertion in model container [2020-12-09 08:28:36,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:28:36" (3/3) ... [2020-12-09 08:28:36,989 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-12-09 08:28:36,999 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:28:37,001 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 08:28:37,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 08:28:37,024 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:28:37,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:28:37,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:28:37,025 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:28:37,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:28:37,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:28:37,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:28:37,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:28:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-09 08:28:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:28:37,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:28:37,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:28:37,037 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:28:37,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:28:37,041 INFO L82 PathProgramCache]: Analyzing trace with hash 119352108, now seen corresponding path program 1 times [2020-12-09 08:28:37,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:28:37,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168060819] [2020-12-09 08:28:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 08:28:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:28:37,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 08:28:37,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:28:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:28:37,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:28:37,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168060819] [2020-12-09 08:28:37,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:28:37,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:28:37,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897715411] [2020-12-09 08:28:37,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:28:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:28:37,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:28:37,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:28:37,176 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-12-09 08:28:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:28:37,203 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-12-09 08:28:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:28:37,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 08:28:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:28:37,210 INFO L225 Difference]: With dead ends: 39 [2020-12-09 08:28:37,210 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 08:28:37,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:28:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 08:28:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-09 08:28:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 08:28:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-12-09 08:28:37,234 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2020-12-09 08:28:37,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:28:37,234 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-12-09 08:28:37,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:28:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-12-09 08:28:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:28:37,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:28:37,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:28:37,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 08:28:37,436 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:28:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:28:37,436 INFO L82 PathProgramCache]: Analyzing trace with hash 176610410, now seen corresponding path program 1 times [2020-12-09 08:28:37,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:28:37,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101473828] [2020-12-09 08:28:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 08:28:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:28:37,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:28:37,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:28:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:28:37,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:28:37,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101473828] [2020-12-09 08:28:37,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:28:37,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:28:37,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437570951] [2020-12-09 08:28:37,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:28:37,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:28:37,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:28:37,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:28:37,504 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-12-09 08:28:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:28:37,509 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-12-09 08:28:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:28:37,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 08:28:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:28:37,510 INFO L225 Difference]: With dead ends: 25 [2020-12-09 08:28:37,510 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 08:28:37,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:28:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 08:28:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 08:28:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 08:28:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 08:28:37,514 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2020-12-09 08:28:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:28:37,514 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 08:28:37,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:28:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 08:28:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:28:37,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:28:37,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:28:37,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 08:28:37,717 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:28:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:28:37,718 INFO L82 PathProgramCache]: Analyzing trace with hash -262109109, now seen corresponding path program 1 times [2020-12-09 08:28:37,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:28:37,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843863485] [2020-12-09 08:28:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 08:28:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:28:37,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 08:28:37,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:28:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:28:37,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:28:37,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843863485] [2020-12-09 08:28:37,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:28:37,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:28:37,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587761650] [2020-12-09 08:28:37,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:28:37,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:28:37,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:28:37,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:28:37,855 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-12-09 08:28:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:28:37,884 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-12-09 08:28:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:28:37,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 08:28:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:28:37,885 INFO L225 Difference]: With dead ends: 19 [2020-12-09 08:28:37,885 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 08:28:37,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:28:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 08:28:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 08:28:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 08:28:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-09 08:28:37,887 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2020-12-09 08:28:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:28:37,887 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-09 08:28:37,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:28:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-09 08:28:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:28:37,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:28:37,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:28:38,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 08:28:38,089 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:28:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:28:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1912419270, now seen corresponding path program 1 times [2020-12-09 08:28:38,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:28:38,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900317420] [2020-12-09 08:28:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 08:28:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:28:38,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:28:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:28:38,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:28:38,248 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 08:28:38,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:28:38,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 08:28:38,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:28:38 BoogieIcfgContainer [2020-12-09 08:28:38,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:28:38,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:28:38,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:28:38,504 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:28:38,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:28:36" (3/4) ... [2020-12-09 08:28:38,507 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 08:28:38,544 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_38c9b7da-a179-435c-a815-fc3cbad8249b/bin/utaipan/witness.graphml [2020-12-09 08:28:38,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:28:38,546 INFO L168 Benchmark]: Toolchain (without parser) took 2259.66 ms. Allocated memory was 58.7 MB in the beginning and 96.5 MB in the end (delta: 37.7 MB). Free memory was 36.6 MB in the beginning and 77.2 MB in the end (delta: -40.7 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:38,546 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:28:38,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.51 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.4 MB in the beginning and 47.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:38,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.79 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 45.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:38,548 INFO L168 Benchmark]: Boogie Preprocessor took 24.68 ms. Allocated memory is still 79.7 MB. Free memory was 45.8 MB in the beginning and 44.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:38,548 INFO L168 Benchmark]: RCFGBuilder took 244.15 ms. Allocated memory is still 79.7 MB. Free memory was 44.3 MB in the beginning and 48.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:38,548 INFO L168 Benchmark]: TraceAbstraction took 1517.86 ms. Allocated memory is still 79.7 MB. Free memory was 47.9 MB in the beginning and 31.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:38,549 INFO L168 Benchmark]: Witness Printer took 40.97 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 31.1 MB in the beginning and 77.2 MB in the end (delta: -46.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:28:38,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.51 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 36.4 MB in the beginning and 47.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.79 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 45.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.68 ms. Allocated memory is still 79.7 MB. Free memory was 45.8 MB in the beginning and 44.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 244.15 ms. Allocated memory is still 79.7 MB. Free memory was 44.3 MB in the beginning and 48.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1517.86 ms. Allocated memory is still 79.7 MB. Free memory was 47.9 MB in the beginning and 31.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Witness Printer took 40.97 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 31.1 MB in the beginning and 77.2 MB in the end (delta: -46.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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); VAL [globalState=0] [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] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 33 SDslu, 21 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 451 SizeOfPredicates, 6 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! Received shutdown request...