./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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-a4ecdab [2020-11-22 12:52:34,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:52:34,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:52:34,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:52:34,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:52:34,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:52:34,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:52:34,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:52:34,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:52:34,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:52:34,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:52:34,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:52:34,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:52:34,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:52:34,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:52:34,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:52:34,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:52:34,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:52:34,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:52:34,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:52:34,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:52:34,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:52:34,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:52:34,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:52:34,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:52:34,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:52:34,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:52:34,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:52:34,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:52:34,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:52:34,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:52:34,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:52:34,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:52:34,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:52:34,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:52:34,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:52:34,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:52:34,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:52:34,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:52:34,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:52:34,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:52:34,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:52:34,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:52:34,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:52:34,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:52:34,610 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:52:34,610 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:52:34,610 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:52:34,610 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:52:34,611 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:52:34,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:52:34,611 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:52:34,611 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:52:34,612 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:52:34,612 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:52:34,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:52:34,612 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:52:34,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:52:34,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:52:34,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:52:34,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:52:34,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:52:34,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:52:34,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:52:34,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:52:34,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:52:34,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:52:34,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:52:34,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:52:34,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:52:34,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:52:34,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:52:34,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:52:34,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:52:34,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:52:34,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:52:34,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:52:34,617 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:52:34,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:52:34,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:52:34,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:52:34,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:52:34,617 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_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0dc10cff0d4b9b6abcb3203593853156d0ff603 [2020-11-22 12:52:34,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:52:34,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:52:34,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:52:34,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:52:34,949 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:52:34,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/../../sv-benchmarks/c/ldv-regression/alt_test.i [2020-11-22 12:52:35,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/d24b2e0e4/dfe2d1a2499a47a8a4f1b3e1386f31a2/FLAG63388e255 [2020-11-22 12:52:35,668 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:52:35,673 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/sv-benchmarks/c/ldv-regression/alt_test.i [2020-11-22 12:52:35,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/d24b2e0e4/dfe2d1a2499a47a8a4f1b3e1386f31a2/FLAG63388e255 [2020-11-22 12:52:35,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/d24b2e0e4/dfe2d1a2499a47a8a4f1b3e1386f31a2 [2020-11-22 12:52:35,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:52:35,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:52:35,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:35,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:52:35,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:52:35,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:35" (1/1) ... [2020-11-22 12:52:35,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342a5f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:35, skipping insertion in model container [2020-11-22 12:52:35,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:35" (1/1) ... [2020-11-22 12:52:35,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:52:36,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:52:36,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:36,406 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) [2020-11-22 12:52:36,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79a346c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:36, skipping insertion in model container [2020-11-22 12:52:36,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:36,408 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:52:36,410 INFO L168 Benchmark]: Toolchain (without parser) took 453.97 ms. Allocated memory is still 109.1 MB. Free memory was 74.5 MB in the beginning and 85.3 MB in the end (delta: -10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:36,411 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 81.1 MB in the beginning and 81.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:52:36,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.95 ms. Allocated memory is still 109.1 MB. Free memory was 74.3 MB in the beginning and 85.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:36,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 81.1 MB in the beginning and 81.0 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 450.95 ms. Allocated memory is still 109.1 MB. Free memory was 74.3 MB in the beginning and 85.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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-a4ecdab [2020-11-22 12:52:38,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:52:38,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:52:38,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:52:38,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:52:38,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:52:38,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:52:38,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:52:38,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:52:38,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:52:38,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:52:38,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:52:38,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:52:38,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:52:38,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:52:38,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:52:38,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:52:38,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:52:38,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:52:38,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:52:38,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:52:38,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:52:38,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:52:38,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:52:38,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:52:38,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:52:38,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:52:38,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:52:38,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:52:38,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:52:38,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:52:38,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:52:38,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:52:38,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:52:38,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:52:38,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:52:38,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:52:38,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:52:38,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:52:38,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:52:38,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:52:38,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:52:38,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:52:38,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:52:38,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:52:38,833 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:52:38,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:52:38,833 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:52:38,834 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:52:38,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:52:38,834 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:52:38,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:52:38,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:52:38,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:52:38,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:52:38,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:52:38,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:52:38,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:52:38,838 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:52:38,838 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:52:38,838 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:52:38,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:52:38,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:52:38,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:52:38,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:52:38,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:52:38,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:52:38,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:52:38,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:52:38,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:52:38,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:52:38,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:52:38,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:52:38,841 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:52:38,842 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:52:38,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:52:38,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:52:38,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:52:38,843 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_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0dc10cff0d4b9b6abcb3203593853156d0ff603 [2020-11-22 12:52:39,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:52:39,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:52:39,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:52:39,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:52:39,289 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:52:39,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/../../sv-benchmarks/c/ldv-regression/alt_test.i [2020-11-22 12:52:39,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/767d02e2a/8f96729ed3b74b4f9b611e95dae348a2/FLAGbff6352aa [2020-11-22 12:52:39,951 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:52:39,951 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/sv-benchmarks/c/ldv-regression/alt_test.i [2020-11-22 12:52:39,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/767d02e2a/8f96729ed3b74b4f9b611e95dae348a2/FLAGbff6352aa [2020-11-22 12:52:40,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/data/767d02e2a/8f96729ed3b74b4f9b611e95dae348a2 [2020-11-22 12:52:40,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:52:40,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:52:40,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:40,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:52:40,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:52:40,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fda5b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40, skipping insertion in model container [2020-11-22 12:52:40,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:52:40,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:52:40,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:40,678 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:52:40,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:52:40,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:40,716 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:52:40,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:40,825 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:52:40,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40 WrapperNode [2020-11-22 12:52:40,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:40,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:52:40,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:52:40,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:52:40,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:52:40,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:52:40,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:52:40,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:52:40,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... [2020-11-22 12:52:40,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:52:40,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:52:40,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:52:40,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:52:40,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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 [2020-11-22 12:52:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 12:52:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:52:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:52:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:52:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:52:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:52:41,461 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:52:41,463 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 12:52:41,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:41 BoogieIcfgContainer [2020-11-22 12:52:41,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:52:41,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:52:41,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:52:41,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:52:41,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:52:40" (1/3) ... [2020-11-22 12:52:41,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cd9102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:52:41, skipping insertion in model container [2020-11-22 12:52:41,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:40" (2/3) ... [2020-11-22 12:52:41,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cd9102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:52:41, skipping insertion in model container [2020-11-22 12:52:41,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:41" (3/3) ... [2020-11-22 12:52:41,477 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-11-22 12:52:41,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:52:41,496 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 12:52:41,509 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 12:52:41,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:52:41,547 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:52:41,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:52:41,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:52:41,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:52:41,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:52:41,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:52:41,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:52:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-22 12:52:41,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:52:41,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:41,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:41,574 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:41,581 INFO L82 PathProgramCache]: Analyzing trace with hash 119352108, now seen corresponding path program 1 times [2020-11-22 12:52:41,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:41,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549928346] [2020-11-22 12:52:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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 [2020-11-22 12:52:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:41,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:52:41,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:41,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:41,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549928346] [2020-11-22 12:52:41,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:41,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:52:41,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549761994] [2020-11-22 12:52:41,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:52:41,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:52:41,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:52:41,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:41,821 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-11-22 12:52:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:41,889 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-11-22 12:52:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:52:41,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 12:52:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:41,903 INFO L225 Difference]: With dead ends: 41 [2020-11-22 12:52:41,903 INFO L226 Difference]: Without dead ends: 20 [2020-11-22 12:52:41,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-22 12:52:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-22 12:52:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 12:52:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-22 12:52:41,943 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2020-11-22 12:52:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:41,944 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-22 12:52:41,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:52:41,944 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-22 12:52:41,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:52:41,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:41,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:42,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,163 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:42,166 INFO L82 PathProgramCache]: Analyzing trace with hash 176610410, now seen corresponding path program 1 times [2020-11-22 12:52:42,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:42,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348196150] [2020-11-22 12:52:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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 [2020-11-22 12:52:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:52:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:42,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:42,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348196150] [2020-11-22 12:52:42,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:42,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:52:42,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588990297] [2020-11-22 12:52:42,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:52:42,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:52:42,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:52:42,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:42,270 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-11-22 12:52:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:42,278 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-22 12:52:42,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:52:42,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 12:52:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:42,280 INFO L225 Difference]: With dead ends: 25 [2020-11-22 12:52:42,280 INFO L226 Difference]: Without dead ends: 13 [2020-11-22 12:52:42,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-22 12:52:42,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-22 12:52:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-22 12:52:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-22 12:52:42,296 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2020-11-22 12:52:42,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:42,296 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-22 12:52:42,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:52:42,297 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-22 12:52:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:52:42,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:42,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:42,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,506 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:42,506 INFO L82 PathProgramCache]: Analyzing trace with hash -202942197, now seen corresponding path program 1 times [2020-11-22 12:52:42,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:42,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546582663] [2020-11-22 12:52:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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 [2020-11-22 12:52:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:42,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:52:42,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:42,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:42,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546582663] [2020-11-22 12:52:42,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:42,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 12:52:42,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790327434] [2020-11-22 12:52:42,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:52:42,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:52:42,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:52:42,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:52:42,629 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-11-22 12:52:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:42,685 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-22 12:52:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:52:42,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 12:52:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:42,686 INFO L225 Difference]: With dead ends: 19 [2020-11-22 12:52:42,686 INFO L226 Difference]: Without dead ends: 13 [2020-11-22 12:52:42,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:52:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-22 12:52:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-22 12:52:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-22 12:52:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-11-22 12:52:42,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2020-11-22 12:52:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:42,690 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-11-22 12:52:42,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:52:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-11-22 12:52:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:52:42,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:42,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:42,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,901 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1910510660, now seen corresponding path program 1 times [2020-11-22 12:52:42,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:42,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172218115] [2020-11-22 12:52:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/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 [2020-11-22 12:52:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:52:42,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:52:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:52:43,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:52:43,057 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:52:43,057 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:52:43,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:52:43,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:52:43 BoogieIcfgContainer [2020-11-22 12:52:43,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:52:43,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:52:43,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:52:43,297 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:52:43,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:41" (3/4) ... [2020-11-22 12:52:43,302 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:52:43,378 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ea4a3a68-dcdb-4150-9f90-ac110cbeff80/bin/utaipan/witness.graphml [2020-11-22 12:52:43,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:52:43,380 INFO L168 Benchmark]: Toolchain (without parser) took 3154.52 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 26.2 MB in the beginning and 40.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:43,381 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 35.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:52:43,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.44 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.0 MB in the beginning and 29.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:43,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.23 ms. Allocated memory is still 60.8 MB. Free memory was 29.0 MB in the beginning and 43.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:43,383 INFO L168 Benchmark]: Boogie Preprocessor took 28.31 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 42.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:52:43,384 INFO L168 Benchmark]: RCFGBuilder took 535.03 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 42.2 MB in the end (delta: -7.5 kB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:43,384 INFO L168 Benchmark]: TraceAbstraction took 1827.56 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.6 MB in the beginning and 42.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:43,385 INFO L168 Benchmark]: Witness Printer took 81.30 ms. Allocated memory is still 73.4 MB. Free memory was 42.8 MB in the beginning and 40.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:43,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 35.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 598.44 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.0 MB in the beginning and 29.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.23 ms. Allocated memory is still 60.8 MB. Free memory was 29.0 MB in the beginning and 43.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.31 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 42.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 535.03 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 42.2 MB in the end (delta: -7.5 kB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1827.56 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.6 MB in the beginning and 42.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 81.30 ms. Allocated memory is still 73.4 MB. Free memory was 42.8 MB in the beginning and 40.3 MB in the end (delta: 2.6 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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] [L3] __assert_fail("0", "alt_test.i", 3, "reach_error") VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, 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, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 902 SizeOfPredicates, 7 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 12 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! Received shutdown request...