./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/trex01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 447515879dde6ddadac2168313caab8f63c0c815 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:02:35,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:02:35,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:02:35,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:02:35,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:02:35,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:02:35,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:02:35,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:02:35,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:02:35,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:02:35,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:02:35,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:02:35,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:02:35,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:02:35,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:02:35,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:02:35,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:02:35,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:02:35,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:02:35,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:02:35,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:02:35,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:02:35,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:02:35,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:02:35,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:02:35,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:02:35,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:02:35,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:02:35,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:02:35,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:02:35,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:02:35,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:02:35,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:02:35,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:02:35,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:02:35,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:02:35,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:02:35,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:02:35,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:02:35,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:02:35,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:02:35,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:02:35,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:02:35,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:02:35,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:02:35,957 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:02:35,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:02:35,958 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:02:35,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:02:35,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:02:35,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:02:35,959 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:02:35,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:02:35,959 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:02:35,960 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:02:35,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:02:35,960 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:02:35,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:02:35,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:02:35,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:02:35,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:02:35,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:02:35,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:02:35,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:02:35,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:02:35,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:02:35,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:02:35,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:02:35,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:02:35,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:02:35,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:02:35,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:02:35,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:02:35,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:02:35,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:02:35,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:02:35,965 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:02:35,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:02:35,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:02:35,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:02:35,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:02:35,966 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 447515879dde6ddadac2168313caab8f63c0c815 [2021-10-16 03:02:36,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:02:36,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:02:36,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:02:36,309 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:02:36,310 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:02:36,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loops/trex01-2.i [2021-10-16 03:02:36,412 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/data/6d100028a/103bbb9228844827bf554c93cdceb1c1/FLAG00c446ba4 [2021-10-16 03:02:36,963 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:02:36,964 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/sv-benchmarks/c/loops/trex01-2.i [2021-10-16 03:02:36,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/data/6d100028a/103bbb9228844827bf554c93cdceb1c1/FLAG00c446ba4 [2021-10-16 03:02:37,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/data/6d100028a/103bbb9228844827bf554c93cdceb1c1 [2021-10-16 03:02:37,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:02:37,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:02:37,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:02:37,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:02:37,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:02:37,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe738cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37, skipping insertion in model container [2021-10-16 03:02:37,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:02:37,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:02:37,591 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/sv-benchmarks/c/loops/trex01-2.i[895,908] [2021-10-16 03:02:37,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:02:37,635 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:02:37,660 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/sv-benchmarks/c/loops/trex01-2.i[895,908] [2021-10-16 03:02:37,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:02:37,695 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:02:37,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37 WrapperNode [2021-10-16 03:02:37,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:02:37,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:02:37,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:02:37,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:02:37,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:02:37,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:02:37,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:02:37,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:02:37,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:02:37,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:02:37,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:02:37,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:02:37,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (1/1) ... [2021-10-16 03:02:37,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:02:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:02:37,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:02:37,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:02:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:02:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:02:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:02:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:02:38,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:02:38,387 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 03:02:38,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:02:38 BoogieIcfgContainer [2021-10-16 03:02:38,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:02:38,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:02:38,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:02:38,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:02:38,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:02:37" (1/3) ... [2021-10-16 03:02:38,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b1a26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:02:38, skipping insertion in model container [2021-10-16 03:02:38,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:37" (2/3) ... [2021-10-16 03:02:38,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b1a26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:02:38, skipping insertion in model container [2021-10-16 03:02:38,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:02:38" (3/3) ... [2021-10-16 03:02:38,402 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2021-10-16 03:02:38,410 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:02:38,410 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 03:02:38,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:02:38,502 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:02:38,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 03:02:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:02:38,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:38,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:02:38,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:38,542 INFO L82 PathProgramCache]: Analyzing trace with hash 720223490, now seen corresponding path program 1 times [2021-10-16 03:02:38,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:02:38,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74032240] [2021-10-16 03:02:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:38,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:02:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:38,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:02:38,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74032240] [2021-10-16 03:02:38,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74032240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:38,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:02:38,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:02:38,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299610488] [2021-10-16 03:02:38,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:02:38,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:02:38,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:02:38,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:02:38,898 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.894736842105263) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:38,984 INFO L93 Difference]: Finished difference Result 38 states and 59 transitions. [2021-10-16 03:02:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:02:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:02:38,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:38,994 INFO L225 Difference]: With dead ends: 38 [2021-10-16 03:02:38,994 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:02:39,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:02:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:02:39,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:02:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:02:39,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-16 03:02:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:39,029 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:02:39,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:02:39,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:02:39,033 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:02:39,034 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:02:39,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:02:39,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:02:39,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:39,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:39,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:39,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:39,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:39,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:39,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:39,108 INFO L857 garLoopResultBuilder]: For program point L35-2(line 35) no Hoare annotation was computed. [2021-10-16 03:02:39,108 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 29) no Hoare annotation was computed. [2021-10-16 03:02:39,108 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 29) no Hoare annotation was computed. [2021-10-16 03:02:39,109 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 03:02:39,109 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-16 03:02:39,109 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-16 03:02:39,109 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:02:39,110 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 36 46) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-16 03:02:39,110 INFO L853 garLoopResultBuilder]: At program point L38-5(lines 36 46) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-16 03:02:39,110 INFO L853 garLoopResultBuilder]: At program point L30-2(line 30) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2021-10-16 03:02:39,111 INFO L853 garLoopResultBuilder]: At program point L30-6(line 30) the Hoare annotation is: (<= 1 ULTIMATE.start_f_~z~0) [2021-10-16 03:02:39,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 03:02:39,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:02:39,112 INFO L853 garLoopResultBuilder]: At program point L25-1(lines 25 47) the Hoare annotation is: (or (<= 1 ULTIMATE.start_f_~z~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-16 03:02:39,112 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 54) no Hoare annotation was computed. [2021-10-16 03:02:39,112 INFO L857 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2021-10-16 03:02:39,112 INFO L857 garLoopResultBuilder]: For program point L34-2(line 34) no Hoare annotation was computed. [2021-10-16 03:02:39,112 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-16 03:02:39,113 INFO L853 garLoopResultBuilder]: At program point L18-2(line 33) the Hoare annotation is: (and (<= 1 ULTIMATE.start_f_~z~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-16 03:02:39,113 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-16 03:02:39,113 INFO L853 garLoopResultBuilder]: At program point L18-5(line 33) the Hoare annotation is: (and (<= 1 ULTIMATE.start_f_~z~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-16 03:02:39,114 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-16 03:02:39,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:02:39,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:02:39 BoogieIcfgContainer [2021-10-16 03:02:39,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:02:39,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:02:39,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:02:39,154 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:02:39,155 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:02:38" (3/4) ... [2021-10-16 03:02:39,158 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:02:39,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-16 03:02:39,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 03:02:39,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 03:02:39,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:02:39,269 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:02:39,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:02:39,273 INFO L168 Benchmark]: Toolchain (without parser) took 1933.71 ms. Allocated memory is still 119.5 MB. Free memory was 83.2 MB in the beginning and 48.5 MB in the end (delta: 34.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:39,277 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 119.5 MB. Free memory was 93.2 MB in the beginning and 93.2 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:02:39,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.04 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 94.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:39,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.72 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 92.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:39,279 INFO L168 Benchmark]: Boogie Preprocessor took 32.49 ms. Allocated memory is still 119.5 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:39,280 INFO L168 Benchmark]: RCFGBuilder took 609.56 ms. Allocated memory is still 119.5 MB. Free memory was 91.0 MB in the beginning and 76.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:39,281 INFO L168 Benchmark]: TraceAbstraction took 761.51 ms. Allocated memory is still 119.5 MB. Free memory was 75.6 MB in the beginning and 51.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:39,281 INFO L168 Benchmark]: Witness Printer took 116.55 ms. Allocated memory is still 119.5 MB. Free memory was 51.8 MB in the beginning and 48.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:39,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 119.5 MB. Free memory was 93.2 MB in the beginning and 93.2 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.04 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 94.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.72 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 92.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.49 ms. Allocated memory is still 119.5 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 609.56 ms. Allocated memory is still 119.5 MB. Free memory was 91.0 MB in the beginning and 76.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 761.51 ms. Allocated memory is still 119.5 MB. Free memory was 75.6 MB in the beginning and 51.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 116.55 ms. Allocated memory is still 119.5 MB. Free memory was 51.8 MB in the beginning and 48.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 633.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 15.0ms, AutomataDifference: 117.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 73.0ms, InitialAbstractionConstructionTime: 13.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 44 SDslu, 12 SDs, 0 SdLazy, 12 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 16 NumberOfFragments, 38 HoareAnnotationTreeSize, 7 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 42.6ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 20.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 15.7ms SsaConstructionTime, 52.9ms SatisfiabilityAnalysisTime, 164.9ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 <= z && !(0 == cond) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 <= z && !(0 == cond) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 <= z || !(0 == cond) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: !(0 == cond) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:02:39,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0784046c-f12f-40ac-a63e-2865575f72a2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...