./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0 --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 199c7a46b756091bf3eb8b2dd1ac46d4cc123e50a50bc65aad9ff531c4b58043 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 19:24:25,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:24:25,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:24:25,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:24:25,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:24:25,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:24:25,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:24:25,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:24:25,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:24:25,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:24:25,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:24:25,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:24:25,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:24:25,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:24:25,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:24:25,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:24:25,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:24:25,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:24:25,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:24:25,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:24:25,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:24:25,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:24:25,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:24:25,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:24:25,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:24:25,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:24:25,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:24:25,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:24:25,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:24:25,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:24:25,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:24:25,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:24:25,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:24:25,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:24:25,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:24:25,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:24:25,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:24:25,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:24:25,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:24:25,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:24:25,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:24:25,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:24:25,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:24:25,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:24:25,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:24:25,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:24:25,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:24:25,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:24:25,886 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:24:25,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:24:25,886 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:24:25,886 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:24:25,887 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:24:25,887 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:24:25,887 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:24:25,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:24:25,888 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:24:25,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:24:25,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:24:25,888 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:24:25,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:24:25,889 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:24:25,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:24:25,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:24:25,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:24:25,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:24:25,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:24:25,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:24:25,891 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:24:25,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:24:25,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:24:25,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:24:25,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:24:25,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:24:25,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:24:25,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:24:25,905 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:24:25,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:24:25,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:24:25,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:24:25,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:24:25,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:24:25,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:24:25,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199c7a46b756091bf3eb8b2dd1ac46d4cc123e50a50bc65aad9ff531c4b58043 [2022-11-16 19:24:26,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:24:26,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:24:26,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:24:26,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:24:26,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:24:26,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2022-11-16 19:24:26,265 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/data/911ed8f3c/b4029ae535cd4f8eaba2723ff65189ec/FLAGafbda0c52 [2022-11-16 19:24:26,704 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:24:26,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2022-11-16 19:24:26,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/data/911ed8f3c/b4029ae535cd4f8eaba2723ff65189ec/FLAGafbda0c52 [2022-11-16 19:24:27,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/data/911ed8f3c/b4029ae535cd4f8eaba2723ff65189ec [2022-11-16 19:24:27,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:24:27,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:24:27,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:24:27,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:24:27,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:24:27,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b54a820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27, skipping insertion in model container [2022-11-16 19:24:27,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:24:27,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:24:27,305 WARN L229 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_06dcf558-04b3-4711-8030-3fa3691f3982/sv-benchmarks/c/loop-crafted/simple_vardep_1.c[584,597] [2022-11-16 19:24:27,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:24:27,345 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:24:27,358 WARN L229 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_06dcf558-04b3-4711-8030-3fa3691f3982/sv-benchmarks/c/loop-crafted/simple_vardep_1.c[584,597] [2022-11-16 19:24:27,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:24:27,374 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:24:27,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27 WrapperNode [2022-11-16 19:24:27,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:24:27,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:24:27,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:24:27,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:24:27,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,405 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-11-16 19:24:27,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:24:27,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:24:27,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:24:27,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:24:27,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:24:27,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:24:27,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:24:27,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:24:27,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (1/1) ... [2022-11-16 19:24:27,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:24:27,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:24:27,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:24:27,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:24:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:24:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:24:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:24:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:24:27,554 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:24:27,556 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:24:27,662 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:24:27,687 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:24:27,688 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 19:24:27,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:24:27 BoogieIcfgContainer [2022-11-16 19:24:27,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:24:27,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:24:27,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:24:27,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:24:27,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:24:27" (1/3) ... [2022-11-16 19:24:27,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a14962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:27, skipping insertion in model container [2022-11-16 19:24:27,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:24:27" (2/3) ... [2022-11-16 19:24:27,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a14962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:24:27, skipping insertion in model container [2022-11-16 19:24:27,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:24:27" (3/3) ... [2022-11-16 19:24:27,702 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2022-11-16 19:24:27,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:24:27,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:24:27,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:24:27,794 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20462b29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:24:27,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:24:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:24:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:24:27,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:24:27,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:24:27,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:24:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:24:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1768690, now seen corresponding path program 1 times [2022-11-16 19:24:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:24:27,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831844095] [2022-11-16 19:24:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:24:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:24:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:24:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:24:28,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:24:28,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831844095] [2022-11-16 19:24:28,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831844095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:24:28,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:24:28,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:24:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315209253] [2022-11-16 19:24:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:24:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:24:28,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:24:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:24:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:24:28,378 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-16 19:24:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:24:28,462 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-11-16 19:24:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:24:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-16 19:24:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:24:28,474 INFO L225 Difference]: With dead ends: 15 [2022-11-16 19:24:28,474 INFO L226 Difference]: Without dead ends: 8 [2022-11-16 19:24:28,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:24:28,485 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:24:28,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:24:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-16 19:24:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-16 19:24:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:24:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-16 19:24:28,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-16 19:24:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:24:28,541 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-16 19:24:28,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-16 19:24:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-16 19:24:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:24:28,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:24:28,542 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-16 19:24:28,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:24:28,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:24:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:24:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1156243610, now seen corresponding path program 1 times [2022-11-16 19:24:28,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:24:28,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424703035] [2022-11-16 19:24:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:24:28,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:24:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:24:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:24:29,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:24:29,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424703035] [2022-11-16 19:24:29,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424703035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:24:29,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300932741] [2022-11-16 19:24:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:24:29,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:24:29,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:24:29,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:24:29,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:24:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:24:29,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 19:24:29,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:24:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:24:29,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:24:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:24:29,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300932741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:24:29,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [951839987] [2022-11-16 19:24:29,503 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-16 19:24:29,503 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:24:29,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:24:29,519 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:24:29,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:24:30,122 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:24:30,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '89#(and (< (mod (+ |ULTIMATE.start_main_~k~0#1| 4294967293) 4294967296) 268435455) (<= 6 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod |ULTIMATE.start_main_~k~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|) 4294967296)) 1 0)) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 4 |ULTIMATE.start_main_~j~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:24:30,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:24:30,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:24:30,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-11-16 19:24:30,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921741189] [2022-11-16 19:24:30,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:24:30,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:24:30,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:24:30,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:24:30,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:24:30,744 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-16 19:24:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:24:30,797 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-11-16 19:24:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:24:30,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 7 [2022-11-16 19:24:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:24:30,798 INFO L225 Difference]: With dead ends: 10 [2022-11-16 19:24:30,798 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 19:24:30,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 19:24:30,801 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:24:30,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:24:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 19:24:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 19:24:30,803 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) [2022-11-16 19:24:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 19:24:30,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-11-16 19:24:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:24:30,803 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 19:24:30,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-16 19:24:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 19:24:30,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 19:24:30,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 19:24:30,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:24:31,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:24:31,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 19:24:31,084 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 19:24:31,085 INFO L895 garLoopResultBuilder]: At program point L21-2(lines 21 27) the Hoare annotation is: (or (let ((.cse0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|))) (and (<= |ULTIMATE.start_main_~k~0#1| .cse0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= .cse0 |ULTIMATE.start_main_~k~0#1|))) (and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~j~0#1| 0))) [2022-11-16 19:24:31,085 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2022-11-16 19:24:31,085 INFO L895 garLoopResultBuilder]: At program point L9-2(lines 7 13) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|))) (and (<= |ULTIMATE.start_main_~k~0#1| .cse0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= .cse0 |ULTIMATE.start_main_~k~0#1|))) [2022-11-16 19:24:31,085 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 19:24:31,086 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2022-11-16 19:24:31,087 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-11-16 19:24:31,095 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 19:24:31,098 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:24:31,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:24:31 BoogieIcfgContainer [2022-11-16 19:24:31,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:24:31,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:24:31,119 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:24:31,119 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:24:31,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:24:27" (3/4) ... [2022-11-16 19:24:31,123 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 19:24:31,132 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-16 19:24:31,132 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-16 19:24:31,133 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 19:24:31,133 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 19:24:31,178 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 19:24:31,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:24:31,179 INFO L158 Benchmark]: Toolchain (without parser) took 4066.69ms. Allocated memory was 119.5MB in the beginning and 148.9MB in the end (delta: 29.4MB). Free memory was 74.0MB in the beginning and 56.8MB in the end (delta: 17.1MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2022-11-16 19:24:31,179 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:24:31,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.85ms. Allocated memory is still 119.5MB. Free memory was 73.8MB in the beginning and 94.0MB in the end (delta: -20.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 19:24:31,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.67ms. Allocated memory is still 119.5MB. Free memory was 94.0MB in the beginning and 92.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:24:31,180 INFO L158 Benchmark]: Boogie Preprocessor took 17.73ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:24:31,181 INFO L158 Benchmark]: RCFGBuilder took 266.22ms. Allocated memory is still 119.5MB. Free memory was 91.6MB in the beginning and 81.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:24:31,181 INFO L158 Benchmark]: TraceAbstraction took 3424.54ms. Allocated memory was 119.5MB in the beginning and 148.9MB in the end (delta: 29.4MB). Free memory was 81.2MB in the beginning and 58.9MB in the end (delta: 22.2MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2022-11-16 19:24:31,182 INFO L158 Benchmark]: Witness Printer took 59.58ms. Allocated memory is still 148.9MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:24:31,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.85ms. Allocated memory is still 119.5MB. Free memory was 73.8MB in the beginning and 94.0MB in the end (delta: -20.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.67ms. Allocated memory is still 119.5MB. Free memory was 94.0MB in the beginning and 92.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.73ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 266.22ms. Allocated memory is still 119.5MB. Free memory was 91.6MB in the beginning and 81.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3424.54ms. Allocated memory was 119.5MB in the beginning and 148.9MB in the end (delta: 29.4MB). Free memory was 81.2MB in the beginning and 58.9MB in the end (delta: 22.2MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. * Witness Printer took 59.58ms. Allocated memory is still 148.9MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: 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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 5 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 39 HoareAnnotationTreeSize, 2 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 1/6 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 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (k <= i + j && cond == 1) && i + j <= k - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((k <= i + j && cond == 1) && i + j <= k) || ((i == 0 && k == 0) && j == 0) RESULT: Ultimate proved your program to be correct! [2022-11-16 19:24:31,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06dcf558-04b3-4711-8030-3fa3691f3982/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE