./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/brs3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur --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 1a50ddc0c317f6668332af6451167549968b4421299586257d39221cfadcc25e --- 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-38b53e6 [2022-11-26 00:13:31,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:13:31,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:13:31,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:13:31,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:13:31,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:13:31,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:13:31,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:13:31,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:13:31,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:13:31,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:13:31,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:13:31,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:13:31,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:13:31,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:13:31,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:13:31,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:13:31,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:13:31,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:13:31,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:13:31,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:13:31,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:13:31,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:13:31,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:13:31,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:13:31,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:13:31,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:13:31,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:13:31,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:13:31,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:13:31,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:13:31,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:13:31,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:13:31,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:13:31,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:13:31,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:13:31,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:13:31,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:13:31,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:13:31,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:13:31,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:13:31,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:13:31,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:13:31,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:13:31,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:13:31,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:13:31,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:13:31,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:13:31,689 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:13:31,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:13:31,690 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:13:31,690 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:13:31,691 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:13:31,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:13:31,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:13:31,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:13:31,692 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:13:31,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:13:31,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:13:31,693 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:13:31,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:13:31,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:13:31,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:13:31,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:13:31,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:13:31,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:13:31,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:13:31,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:13:31,696 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:13:31,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:13:31,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:13:31,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:13:31,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:13:31,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:13:31,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:13:31,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:13:31,698 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:13:31,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:13:31,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:13:31,698 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:13:31,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:13:31,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:13:31,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:13:31,699 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_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a50ddc0c317f6668332af6451167549968b4421299586257d39221cfadcc25e [2022-11-26 00:13:31,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:13:32,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:13:32,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:13:32,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:13:32,033 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:13:32,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-fpi/brs3f.c [2022-11-26 00:13:35,060 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:13:35,277 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:13:35,278 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/sv-benchmarks/c/array-fpi/brs3f.c [2022-11-26 00:13:35,286 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/data/235e62402/cdaf40178ce14a30bf15af4d6612af2a/FLAG4a7644269 [2022-11-26 00:13:35,299 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/data/235e62402/cdaf40178ce14a30bf15af4d6612af2a [2022-11-26 00:13:35,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:13:35,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:13:35,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:13:35,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:13:35,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:13:35,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edf6e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35, skipping insertion in model container [2022-11-26 00:13:35,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:13:35,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:13:35,467 WARN L237 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_457be0ad-5e8c-4822-8242-49cde7d103ad/sv-benchmarks/c/array-fpi/brs3f.c[588,601] [2022-11-26 00:13:35,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:13:35,498 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:13:35,509 WARN L237 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_457be0ad-5e8c-4822-8242-49cde7d103ad/sv-benchmarks/c/array-fpi/brs3f.c[588,601] [2022-11-26 00:13:35,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:13:35,530 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:13:35,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35 WrapperNode [2022-11-26 00:13:35,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:13:35,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:13:35,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:13:35,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:13:35,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,566 INFO L138 Inliner]: procedures = 17, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-11-26 00:13:35,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:13:35,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:13:35,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:13:35,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:13:35,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,591 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:13:35,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:13:35,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:13:35,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:13:35,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:35,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:13:35,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:35,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:13:35,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:13:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:13:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:13:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:13:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:13:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:13:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:13:35,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:13:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:13:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:13:35,750 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:13:35,752 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:13:35,897 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:13:35,981 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:13:35,986 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:13:35,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:13:35 BoogieIcfgContainer [2022-11-26 00:13:35,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:13:35,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:13:35,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:13:35,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:13:35,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:13:35" (1/3) ... [2022-11-26 00:13:36,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dc2c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:13:35, skipping insertion in model container [2022-11-26 00:13:36,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:35" (2/3) ... [2022-11-26 00:13:36,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dc2c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:13:36, skipping insertion in model container [2022-11-26 00:13:36,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:13:35" (3/3) ... [2022-11-26 00:13:36,004 INFO L112 eAbstractionObserver]: Analyzing ICFG brs3f.c [2022-11-26 00:13:36,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:13:36,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:13:36,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:13:36,083 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;@5b26450c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:13:36,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:13:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) [2022-11-26 00:13:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:13:36,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:36,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:13:36,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:13:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1448994786, now seen corresponding path program 1 times [2022-11-26 00:13:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413297627] [2022-11-26 00:13:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:36,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:36,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413297627] [2022-11-26 00:13:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413297627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:36,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:36,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:13:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181792499] [2022-11-26 00:13:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:36,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:13:36,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:13:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:13:36,569 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:36,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:36,629 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-26 00:13:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:13:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:13:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:36,640 INFO L225 Difference]: With dead ends: 18 [2022-11-26 00:13:36,650 INFO L226 Difference]: Without dead ends: 8 [2022-11-26 00:13:36,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:13:36,657 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:36,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:13:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-26 00:13:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-26 00:13:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-11-26 00:13:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-26 00:13:36,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-11-26 00:13:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:36,701 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-26 00:13:36,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-26 00:13:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:13:36,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:36,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:36,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:13:36,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:13:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1973441861, now seen corresponding path program 1 times [2022-11-26 00:13:36,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:36,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516710610] [2022-11-26 00:13:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:13:36,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:36,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516710610] [2022-11-26 00:13:36,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516710610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:36,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:36,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:13:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325542794] [2022-11-26 00:13:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:36,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:13:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:13:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:13:36,854 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-26 00:13:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:36,879 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-11-26 00:13:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:13:36,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 [2022-11-26 00:13:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:36,881 INFO L225 Difference]: With dead ends: 12 [2022-11-26 00:13:36,881 INFO L226 Difference]: Without dead ends: 9 [2022-11-26 00:13:36,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:13:36,883 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:36,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:13:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-26 00:13:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-26 00:13:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-26 00:13:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-26 00:13:36,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2022-11-26 00:13:36,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:36,888 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-26 00:13:36,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-26 00:13:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-26 00:13:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:13:36,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:36,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:13:36,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:13:36,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:36,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1046873979, now seen corresponding path program 1 times [2022-11-26 00:13:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:36,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837202658] [2022-11-26 00:13:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:36,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:13:37,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:37,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837202658] [2022-11-26 00:13:37,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837202658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:37,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257168029] [2022-11-26 00:13:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:37,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:37,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:37,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:37,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:13:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:37,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-26 00:13:37,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:37,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:13:37,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-26 00:13:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:13:37,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:37,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:13:37,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-26 00:13:37,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:13:37,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-26 00:13:37,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-26 00:13:37,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-26 00:13:37,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-26 00:13:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:13:37,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257168029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1938436767] [2022-11-26 00:13:37,874 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-26 00:13:37,874 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:37,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:13:37,894 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:13:37,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:13:37,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,099 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-26 00:13:38,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-26 00:13:38,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-26 00:13:38,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 33 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 267 [2022-11-26 00:13:38,361 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:13:38,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,739 INFO L321 Elim1Store]: treesize reduction 261, result has 7.8 percent of original size [2022-11-26 00:13:38,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 42 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 16 case distinctions, treesize of input 790 treesize of output 810 [2022-11-26 00:13:38,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:38,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:13:38,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 558 treesize of output 552 [2022-11-26 00:13:39,670 INFO L321 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size [2022-11-26 00:13:39,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 563 treesize of output 531 [2022-11-26 00:13:39,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2022-11-26 00:13:39,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-26 00:13:39,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-26 00:13:39,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:13:40,070 INFO L321 Elim1Store]: treesize reduction 56, result has 55.9 percent of original size [2022-11-26 00:13:40,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 156 [2022-11-26 00:13:40,102 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:13:40,182 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-26 00:13:40,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 80 [2022-11-26 00:13:40,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:13:40,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 41 [2022-11-26 00:13:40,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:40,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:13:40,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-26 00:13:40,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:13:40,279 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:13:40,627 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '137#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem10#1| (* 3 ~N~0)) 1 0)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-26 00:13:40,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:13:40,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:40,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-26 00:13:40,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518394834] [2022-11-26 00:13:40,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:40,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:13:40,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:40,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:13:40,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:13:40,630 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2022-11-26 00:13:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:40,701 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-26 00:13:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:13:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 8 [2022-11-26 00:13:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:40,702 INFO L225 Difference]: With dead ends: 13 [2022-11-26 00:13:40,703 INFO L226 Difference]: Without dead ends: 10 [2022-11-26 00:13:40,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:13:40,704 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:40,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:13:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-26 00:13:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-26 00:13:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2022-11-26 00:13:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-26 00:13:40,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2022-11-26 00:13:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:40,708 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-26 00:13:40,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2022-11-26 00:13:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-26 00:13:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:13:40,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:40,709 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:40,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 00:13:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:40,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:13:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1906926587, now seen corresponding path program 2 times [2022-11-26 00:13:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776469593] [2022-11-26 00:13:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:40,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:41,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:41,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776469593] [2022-11-26 00:13:41,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776469593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858461413] [2022-11-26 00:13:41,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:13:41,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:41,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:41,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:41,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:13:41,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:13:41,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:13:41,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:13:41,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:41,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:41,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858461413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:41,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122055065] [2022-11-26 00:13:41,268 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-26 00:13:41,268 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:41,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:13:41,269 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:13:41,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:13:41,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,368 INFO L321 Elim1Store]: treesize reduction 71, result has 30.4 percent of original size [2022-11-26 00:13:41,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 54 [2022-11-26 00:13:41,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,482 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-26 00:13:41,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-26 00:13:41,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 33 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 267 [2022-11-26 00:13:41,590 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:13:41,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,866 INFO L321 Elim1Store]: treesize reduction 261, result has 7.8 percent of original size [2022-11-26 00:13:41,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 42 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 16 case distinctions, treesize of input 791 treesize of output 811 [2022-11-26 00:13:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:41,976 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-26 00:13:41,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 34 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 2 case distinctions, treesize of input 631 treesize of output 619 [2022-11-26 00:13:42,336 INFO L321 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size [2022-11-26 00:13:42,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 563 treesize of output 533 [2022-11-26 00:13:42,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 472 treesize of output 451 [2022-11-26 00:13:42,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-26 00:13:42,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-26 00:13:42,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:13:42,923 INFO L321 Elim1Store]: treesize reduction 56, result has 55.9 percent of original size [2022-11-26 00:13:42,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 156 [2022-11-26 00:13:42,952 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:13:42,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2022-11-26 00:13:42,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-26 00:13:43,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:43,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 116 [2022-11-26 00:13:43,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2022-11-26 00:13:43,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:43,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:13:43,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-26 00:13:43,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:13:43,121 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:13:43,400 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem10#1| (* 3 ~N~0)) 1 0)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-26 00:13:43,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:13:43,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:43,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-26 00:13:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322432706] [2022-11-26 00:13:43,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:43,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:13:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:43,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:13:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:13:43,403 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-11-26 00:13:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:43,454 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-26 00:13:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:13:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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 9 [2022-11-26 00:13:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:43,456 INFO L225 Difference]: With dead ends: 17 [2022-11-26 00:13:43,456 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:13:43,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:13:43,457 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:43,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:13:43,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:13:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-26 00:13:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-11-26 00:13:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-26 00:13:43,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2022-11-26 00:13:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:43,461 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-26 00:13:43,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-11-26 00:13:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-26 00:13:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:13:43,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:43,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:43,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:43,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:13:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1099829186, now seen corresponding path program 3 times [2022-11-26 00:13:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:43,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415774667] [2022-11-26 00:13:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:13:43,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:13:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:13:43,748 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:13:43,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:13:43,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:13:43,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:13:43,755 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-11-26 00:13:43,758 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:13:43,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:13:43 BoogieIcfgContainer [2022-11-26 00:13:43,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:13:43,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:13:43,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:13:43,782 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:13:43,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:13:35" (3/4) ... [2022-11-26 00:13:43,785 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-26 00:13:43,820 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_457be0ad-5e8c-4822-8242-49cde7d103ad/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:13:43,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:13:43,821 INFO L158 Benchmark]: Toolchain (without parser) took 8517.93ms. Allocated memory was 218.1MB in the beginning and 314.6MB in the end (delta: 96.5MB). Free memory was 172.3MB in the beginning and 110.5MB in the end (delta: 61.8MB). Peak memory consumption was 160.0MB. Max. memory is 16.1GB. [2022-11-26 00:13:43,821 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 79.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:13:43,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.93ms. Allocated memory is still 218.1MB. Free memory was 171.9MB in the beginning and 161.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:13:43,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.40ms. Allocated memory is still 218.1MB. Free memory was 161.4MB in the beginning and 159.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:13:43,822 INFO L158 Benchmark]: Boogie Preprocessor took 26.87ms. Allocated memory is still 218.1MB. Free memory was 159.8MB in the beginning and 158.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:13:43,822 INFO L158 Benchmark]: RCFGBuilder took 394.86ms. Allocated memory is still 218.1MB. Free memory was 158.2MB in the beginning and 143.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:13:43,823 INFO L158 Benchmark]: TraceAbstraction took 7787.46ms. Allocated memory was 218.1MB in the beginning and 314.6MB in the end (delta: 96.5MB). Free memory was 142.0MB in the beginning and 112.6MB in the end (delta: 29.4MB). Peak memory consumption was 126.4MB. Max. memory is 16.1GB. [2022-11-26 00:13:43,823 INFO L158 Benchmark]: Witness Printer took 38.81ms. Allocated memory is still 314.6MB. Free memory was 112.6MB in the beginning and 110.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:13:43,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory was 79.7MB in the beginning and 79.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.93ms. Allocated memory is still 218.1MB. Free memory was 171.9MB in the beginning and 161.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.40ms. Allocated memory is still 218.1MB. Free memory was 161.4MB in the beginning and 159.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.87ms. Allocated memory is still 218.1MB. Free memory was 159.8MB in the beginning and 158.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 394.86ms. Allocated memory is still 218.1MB. Free memory was 158.2MB in the beginning and 143.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7787.46ms. Allocated memory was 218.1MB in the beginning and 314.6MB in the end (delta: 96.5MB). Free memory was 142.0MB in the beginning and 112.6MB in the end (delta: 29.4MB). Peak memory consumption was 126.4MB. Max. memory is 16.1GB. * Witness Printer took 38.81ms. Allocated memory is still 314.6MB. Free memory was 112.6MB in the beginning and 110.5MB 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [a={-1:0}, i=0, N=2, sum={9:0}] [L31] COND TRUE i