./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS --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 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c --- 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-8393723 [2022-11-19 07:44:11,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:44:11,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:44:11,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:44:11,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:44:11,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:44:11,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:44:11,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:44:11,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:44:11,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:44:11,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:44:11,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:44:11,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:44:11,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:44:11,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:44:11,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:44:11,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:44:11,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:44:11,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:44:11,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:44:11,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:44:11,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:44:11,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:44:11,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:44:11,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:44:11,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:44:11,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:44:11,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:44:11,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:44:11,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:44:11,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:44:11,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:44:11,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:44:11,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:44:11,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:44:11,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:44:11,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:44:11,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:44:11,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:44:11,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:44:11,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:44:11,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:44:11,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:44:11,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:44:11,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:44:11,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:44:11,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:44:11,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:44:11,599 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:44:11,600 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:44:11,600 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:44:11,600 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:44:11,601 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:44:11,602 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:44:11,602 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:44:11,602 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:44:11,603 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:44:11,603 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:44:11,603 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:44:11,603 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:44:11,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:44:11,604 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:44:11,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:44:11,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:44:11,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:44:11,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:44:11,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:44:11,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:44:11,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:44:11,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:44:11,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:44:11,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:44:11,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:44:11,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:44:11,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:44:11,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:44:11,610 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:44:11,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:44:11,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:44:11,611 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:44:11,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:44:11,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:44:11,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:44:11,612 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_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c [2022-11-19 07:44:11,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:44:11,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:44:11,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:44:11,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:44:11,966 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:44:11,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2022-11-19 07:44:12,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/data/30aff6e52/511105ac301f482388338cae0258b76d/FLAG766108f1d [2022-11-19 07:44:12,464 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:44:12,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2022-11-19 07:44:12,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/data/30aff6e52/511105ac301f482388338cae0258b76d/FLAG766108f1d [2022-11-19 07:44:12,865 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/data/30aff6e52/511105ac301f482388338cae0258b76d [2022-11-19 07:44:12,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:44:12,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:44:12,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:44:12,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:44:12,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:44:12,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:12" (1/1) ... [2022-11-19 07:44:12,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36df546c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:12, skipping insertion in model container [2022-11-19 07:44:12,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:12" (1/1) ... [2022-11-19 07:44:12,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:44:12,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:44:13,076 WARN L234 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_07092695-23b4-48c8-974d-b934d9712842/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2022-11-19 07:44:13,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:44:13,126 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:44:13,136 WARN L234 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_07092695-23b4-48c8-974d-b934d9712842/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2022-11-19 07:44:13,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:44:13,153 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:44:13,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13 WrapperNode [2022-11-19 07:44:13,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:44:13,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:44:13,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:44:13,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:44:13,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,191 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-11-19 07:44:13,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:44:13,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:44:13,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:44:13,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:44:13,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:44:13,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:44:13,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:44:13,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:44:13,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (1/1) ... [2022-11-19 07:44:13,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:44:13,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:44:13,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:44:13,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:44:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:44:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:44:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:44:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:44:13,369 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:44:13,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:44:13,509 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:44:13,553 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:44:13,554 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:44:13,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:13 BoogieIcfgContainer [2022-11-19 07:44:13,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:44:13,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:44:13,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:44:13,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:44:13,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:12" (1/3) ... [2022-11-19 07:44:13,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43186c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:13, skipping insertion in model container [2022-11-19 07:44:13,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:13" (2/3) ... [2022-11-19 07:44:13,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43186c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:13, skipping insertion in model container [2022-11-19 07:44:13,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:13" (3/3) ... [2022-11-19 07:44:13,567 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2022-11-19 07:44:13,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:44:13,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:44:13,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:44:13,653 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;@7b5d5350, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:44:13,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:44:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:44:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:44:13,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:13,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:44:13,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:44:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash 66745263, now seen corresponding path program 1 times [2022-11-19 07:44:13,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:13,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646837503] [2022-11-19 07:44:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:44:13,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:44:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:44:13,830 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:44:13,833 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:44:13,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:44:13,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:44:13,843 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:44:13,849 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:44:13,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:44:13 BoogieIcfgContainer [2022-11-19 07:44:13,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:44:13,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:44:13,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:44:13,873 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:44:13,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:13" (3/4) ... [2022-11-19 07:44:13,876 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:44:13,913 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:44:13,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:44:13,914 INFO L158 Benchmark]: Toolchain (without parser) took 1045.33ms. Allocated memory is still 109.1MB. Free memory was 73.2MB in the beginning and 54.9MB in the end (delta: 18.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-19 07:44:13,915 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 30.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:44:13,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.83ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 84.2MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:44:13,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.69ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 82.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:44:13,917 INFO L158 Benchmark]: Boogie Preprocessor took 35.30ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 81.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:44:13,917 INFO L158 Benchmark]: RCFGBuilder took 327.95ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 70.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:44:13,918 INFO L158 Benchmark]: TraceAbstraction took 313.38ms. Allocated memory is still 109.1MB. Free memory was 70.0MB in the beginning and 56.5MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:44:13,919 INFO L158 Benchmark]: Witness Printer took 40.34ms. Allocated memory is still 109.1MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:44:13,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 30.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.83ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 84.2MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.69ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 82.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.30ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 81.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.95ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 70.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 313.38ms. Allocated memory is still 109.1MB. Free memory was 70.0MB in the beginning and 56.5MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 40.34ms. Allocated memory is still 109.1MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.7MB). There was no memory consumed. 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 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=1] [L23] COND FALSE !(x < y) [L31] CALL __VERIFIER_assert(x != y) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L12] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 07:44:13,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07092695-23b4-48c8-974d-b934d9712842/bin/utaipan-I9t0OCRTmS/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE