./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta --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 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 --- 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-dbf71c6-m [2022-10-17 17:22:28,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:22:28,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:22:28,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:22:28,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:22:28,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:22:28,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:22:28,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:22:28,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:22:28,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:22:28,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:22:28,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:22:28,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:22:28,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:22:28,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:22:28,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:22:28,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:22:28,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:22:28,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:22:28,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:22:28,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:22:28,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:22:28,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:22:28,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:22:28,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:22:28,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:22:28,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:22:28,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:22:28,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:22:28,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:22:28,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:22:28,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:22:28,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:22:28,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:22:28,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:22:28,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:22:28,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:22:28,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:22:28,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:22:28,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:22:28,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:22:28,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:22:28,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:22:28,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:22:28,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:22:28,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:22:28,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:22:28,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:22:28,607 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:22:28,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:22:28,607 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:22:28,608 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:22:28,609 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:22:28,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:22:28,610 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:22:28,610 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:22:28,610 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:22:28,610 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:22:28,611 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:22:28,611 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:22:28,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:22:28,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:22:28,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:22:28,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:22:28,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:22:28,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:22:28,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:22:28,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:22:28,616 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:22:28,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:22:28,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:22:28,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:22:28,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:22:28,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:22:28,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:28,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:22:28,619 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:22:28,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:22:28,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:22:28,619 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:22:28,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:22:28,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:22:28,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:22:28,621 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_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2022-10-17 17:22:29,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:22:29,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:22:29,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:22:29,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:22:29,096 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:22:29,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-10-17 17:22:29,184 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/data/176afd455/4a5dc76b3af0476b919aafe158843038/FLAGbddfe5290 [2022-10-17 17:22:29,750 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:22:29,750 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-10-17 17:22:29,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/data/176afd455/4a5dc76b3af0476b919aafe158843038/FLAGbddfe5290 [2022-10-17 17:22:30,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/data/176afd455/4a5dc76b3af0476b919aafe158843038 [2022-10-17 17:22:30,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:22:30,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:22:30,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:30,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:22:30,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:22:30,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137543dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30, skipping insertion in model container [2022-10-17 17:22:30,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:22:30,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:22:30,388 WARN L230 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_aacde224-1b48-454f-b79b-b816eddeea5d/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-10-17 17:22:30,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:30,475 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:22:30,490 WARN L230 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_aacde224-1b48-454f-b79b-b816eddeea5d/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-10-17 17:22:30,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:30,534 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:22:30,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30 WrapperNode [2022-10-17 17:22:30,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:30,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:30,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:22:30,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:22:30,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,589 INFO L138 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2022-10-17 17:22:30,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:30,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:22:30,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:22:30,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:22:30,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:22:30,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:22:30,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:22:30,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:22:30,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (1/1) ... [2022-10-17 17:22:30,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:30,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:30,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:22:30,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:22:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:22:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-10-17 17:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:22:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:22:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:22:30,843 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:22:30,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:22:31,434 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:22:31,602 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:22:31,602 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 17:22:31,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:31 BoogieIcfgContainer [2022-10-17 17:22:31,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:22:31,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:22:31,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:22:31,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:22:31,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:22:30" (1/3) ... [2022-10-17 17:22:31,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436e6f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:22:31, skipping insertion in model container [2022-10-17 17:22:31,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:30" (2/3) ... [2022-10-17 17:22:31,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436e6f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:22:31, skipping insertion in model container [2022-10-17 17:22:31,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:31" (3/3) ... [2022-10-17 17:22:31,628 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-10-17 17:22:31,651 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:22:31,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:22:31,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:22:31,731 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;@6d1c931d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:22:31,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:22:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 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) [2022-10-17 17:22:31,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:22:31,744 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:31,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:31,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1869257227, now seen corresponding path program 1 times [2022-10-17 17:22:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:31,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344187019] [2022-10-17 17:22:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:31,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:32,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:32,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344187019] [2022-10-17 17:22:32,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344187019] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:32,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:22:32,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:22:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471090578] [2022-10-17 17:22:32,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:32,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:22:32,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:22:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:32,224 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 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 4.333333333333333) internal successors, (13), 2 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) [2022-10-17 17:22:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:32,326 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2022-10-17 17:22:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:22:32,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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) Word has length 13 [2022-10-17 17:22:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:32,341 INFO L225 Difference]: With dead ends: 43 [2022-10-17 17:22:32,342 INFO L226 Difference]: Without dead ends: 20 [2022-10-17 17:22:32,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:32,351 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:32,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:22:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-17 17:22:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-17 17:22:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-10-17 17:22:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-10-17 17:22:32,386 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2022-10-17 17:22:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:32,387 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-10-17 17:22:32,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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) [2022-10-17 17:22:32,387 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-10-17 17:22:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:22:32,388 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:32,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:32,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:22:32,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2097630440, now seen corresponding path program 1 times [2022-10-17 17:22:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:32,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348765232] [2022-10-17 17:22:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:32,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:32,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:32,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348765232] [2022-10-17 17:22:32,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348765232] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:22:32,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998636667] [2022-10-17 17:22:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:32,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:32,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:32,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:22:32,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:22:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:32,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:22:32,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:22:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:32,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:22:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:32,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998636667] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:22:32,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [940299794] [2022-10-17 17:22:32,881 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-10-17 17:22:32,881 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:22:32,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:22:32,893 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:22:32,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:22:32,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:33,009 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:22:33,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-10-17 17:22:33,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:33,051 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:22:33,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-10-17 17:22:33,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:33,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-10-17 17:22:33,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:22:33,453 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-10-17 17:22:33,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 184 treesize of output 181 [2022-10-17 17:22:33,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-10-17 17:22:33,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-17 17:22:33,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:22:33,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:22:34,230 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:22:35,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [940299794] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:35,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:22:35,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3, 3, 3] total 13 [2022-10-17 17:22:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904385384] [2022-10-17 17:22:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 17:22:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 17:22:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:22:35,524 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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) [2022-10-17 17:22:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:35,818 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-10-17 17:22:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:22:35,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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 16 [2022-10-17 17:22:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:35,822 INFO L225 Difference]: With dead ends: 46 [2022-10-17 17:22:35,822 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 17:22:35,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:22:35,834 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:35,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 31 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:22:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 17:22:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-10-17 17:22:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-10-17 17:22:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-10-17 17:22:35,847 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2022-10-17 17:22:35,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:35,848 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-10-17 17:22:35,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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) [2022-10-17 17:22:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-10-17 17:22:35,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 17:22:35,849 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:35,850 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:35,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:22:36,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:36,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1635510525, now seen corresponding path program 1 times [2022-10-17 17:22:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:36,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824499139] [2022-10-17 17:22:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:36,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:22:36,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:36,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824499139] [2022-10-17 17:22:36,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824499139] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:22:36,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332915656] [2022-10-17 17:22:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:36,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:36,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:22:36,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:22:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:36,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:22:36,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:22:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:22:36,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:22:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:22:36,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332915656] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:22:36,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1266090620] [2022-10-17 17:22:36,463 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-10-17 17:22:36,463 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:22:36,464 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:22:36,464 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:22:36,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:22:36,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:36,520 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:22:36,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-10-17 17:22:36,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:36,557 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:22:36,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-10-17 17:22:36,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:36,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-10-17 17:22:36,713 INFO L356 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2022-10-17 17:22:36,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 180 [2022-10-17 17:22:36,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-10-17 17:22:36,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:22:36,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:22:36,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-17 17:22:37,347 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:22:39,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1266090620] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:39,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:22:39,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2022-10-17 17:22:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338723180] [2022-10-17 17:22:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 17:22:39,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 17:22:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-10-17 17:22:39,321 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-10-17 17:22:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:40,029 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-10-17 17:22:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 17:22:40,029 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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 20 [2022-10-17 17:22:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:40,031 INFO L225 Difference]: With dead ends: 38 [2022-10-17 17:22:40,031 INFO L226 Difference]: Without dead ends: 36 [2022-10-17 17:22:40,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2022-10-17 17:22:40,032 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:40,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:22:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-17 17:22:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-10-17 17:22:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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) [2022-10-17 17:22:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-10-17 17:22:40,057 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2022-10-17 17:22:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:40,057 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-10-17 17:22:40,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-10-17 17:22:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-10-17 17:22:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:22:40,060 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:40,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:40,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:22:40,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:40,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:40,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash 304009, now seen corresponding path program 1 times [2022-10-17 17:22:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:40,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032272343] [2022-10-17 17:22:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:22:40,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:40,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032272343] [2022-10-17 17:22:40,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032272343] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:22:40,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277947924] [2022-10-17 17:22:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:40,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:40,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:40,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:22:40,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:22:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:40,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:22:40,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:22:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:22:40,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:22:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:22:40,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277947924] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:22:40,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1587615155] [2022-10-17 17:22:40,538 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-10-17 17:22:40,538 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:22:40,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:22:40,538 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:22:40,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:22:40,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:40,571 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:22:40,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-10-17 17:22:40,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:40,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-10-17 17:22:40,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:40,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-10-17 17:22:40,698 INFO L356 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2022-10-17 17:22:40,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 180 [2022-10-17 17:22:40,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-10-17 17:22:40,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:22:40,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-17 17:22:40,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:22:41,455 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:22:43,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1587615155] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:43,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:22:43,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2022-10-17 17:22:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26226801] [2022-10-17 17:22:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:43,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 17:22:43,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 17:22:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-10-17 17:22:43,076 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-10-17 17:22:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:43,964 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2022-10-17 17:22:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 17:22:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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 22 [2022-10-17 17:22:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:43,968 INFO L225 Difference]: With dead ends: 47 [2022-10-17 17:22:43,968 INFO L226 Difference]: Without dead ends: 45 [2022-10-17 17:22:43,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-10-17 17:22:43,970 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:43,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 36 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:22:43,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-17 17:22:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2022-10-17 17:22:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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) [2022-10-17 17:22:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-10-17 17:22:43,984 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2022-10-17 17:22:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:43,985 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-10-17 17:22:43,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-10-17 17:22:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-10-17 17:22:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:22:43,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:43,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:44,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:22:44,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:44,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash 316013492, now seen corresponding path program 1 times [2022-10-17 17:22:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:44,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055693224] [2022-10-17 17:22:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:22:44,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:44,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055693224] [2022-10-17 17:22:44,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055693224] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:22:44,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539655558] [2022-10-17 17:22:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:44,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:44,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:22:44,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:22:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:44,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:22:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:22:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:22:44,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:22:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 17:22:44,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539655558] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:22:44,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1729900961] [2022-10-17 17:22:44,470 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-10-17 17:22:44,471 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:22:44,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:22:44,471 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:22:44,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:22:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:44,516 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:22:44,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-10-17 17:22:44,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:44,545 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:22:44,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-10-17 17:22:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:44,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-10-17 17:22:44,664 INFO L356 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2022-10-17 17:22:44,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 180 [2022-10-17 17:22:44,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-10-17 17:22:44,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-17 17:22:44,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:22:44,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:22:45,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:22:47,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1729900961] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:47,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:22:47,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2022-10-17 17:22:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785772079] [2022-10-17 17:22:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:47,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 17:22:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 17:22:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:22:47,055 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-10-17 17:22:47,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:47,439 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-10-17 17:22:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:22:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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 22 [2022-10-17 17:22:47,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:47,440 INFO L225 Difference]: With dead ends: 53 [2022-10-17 17:22:47,440 INFO L226 Difference]: Without dead ends: 51 [2022-10-17 17:22:47,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-10-17 17:22:47,441 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:47,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 41 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:22:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-17 17:22:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2022-10-17 17:22:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 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) [2022-10-17 17:22:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-10-17 17:22:47,454 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 22 [2022-10-17 17:22:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:47,454 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-10-17 17:22:47,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-10-17 17:22:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-10-17 17:22:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 17:22:47,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:47,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:47,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-17 17:22:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:47,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:47,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1020992384, now seen corresponding path program 1 times [2022-10-17 17:22:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:47,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611492856] [2022-10-17 17:22:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:22:47,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:47,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611492856] [2022-10-17 17:22:47,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611492856] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:22:47,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515850236] [2022-10-17 17:22:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:47,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:47,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:22:47,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:22:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:47,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:22:47,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:22:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:22:47,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:22:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:22:47,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515850236] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:22:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [890427110] [2022-10-17 17:22:47,828 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-10-17 17:22:47,829 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:22:47,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:22:47,829 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:22:47,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:22:47,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:47,855 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:22:47,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-10-17 17:22:47,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:47,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-10-17 17:22:47,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:22:47,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-10-17 17:22:47,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:22:47,944 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-10-17 17:22:47,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 184 treesize of output 181 [2022-10-17 17:22:48,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-10-17 17:22:48,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:22:48,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:22:48,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-10-17 17:22:48,518 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:22:49,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [890427110] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:49,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:22:49,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2022-10-17 17:22:49,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376084288] [2022-10-17 17:22:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:49,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 17:22:49,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 17:22:49,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:22:49,816 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 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) [2022-10-17 17:22:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:50,108 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-10-17 17:22:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:22:50,109 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 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 24 [2022-10-17 17:22:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:50,110 INFO L225 Difference]: With dead ends: 40 [2022-10-17 17:22:50,110 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:22:50,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-10-17 17:22:50,111 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 31 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:50,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:22:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:22:50,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:22:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:22:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:22:50,113 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-10-17 17:22:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:50,114 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:22:50,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 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) [2022-10-17 17:22:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:22:50,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:22:50,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:22:50,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:22:50,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:22:50,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:22:51,504 INFO L902 garLoopResultBuilder]: At program point L85(lines 58 86) the Hoare annotation is: true [2022-10-17 17:22:51,504 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:22:51,504 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-10-17 17:22:51,504 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2022-10-17 17:22:51,505 INFO L895 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-10-17 17:22:51,505 INFO L899 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2022-10-17 17:22:51,505 INFO L899 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2022-10-17 17:22:51,505 INFO L899 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2022-10-17 17:22:51,506 INFO L895 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: (let ((.cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (.cse0 (<= 0 |ULTIMATE.start_main_~#A~0#1.base|)) (.cse1 (= |ULTIMATE.start_main_~#A~0#1.offset| 0)) (.cse3 (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0)) (.cse4 (<= 8 |ULTIMATE.start_main_~i~1#1|)) (.cse5 (= |#NULL.offset| 0)) (.cse6 (<= 0 |#StackHeapBarrier|)) (.cse7 (= |#NULL.base| 0))) (or (and (= 1 (select |#valid| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| 8)) 0) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 0) .cse0 (< |#StackHeapBarrier| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.base| |ULTIMATE.start_main_~#A~0#1.base|) (= (+ |ULTIMATE.start_parse_expression_list_~i~0#1| 1) 0) (not (= |ULTIMATE.start_parse_expression_list_~str#1.base| 0)) .cse1 (= |ULTIMATE.start_parse_expression_list_~str#1.base| |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= .cse2 0) (= |ULTIMATE.start_main_~#A~0#1.offset| |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= 2 (select |#length| |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|)) .cse3 .cse4 .cse5 .cse6 (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| |ULTIMATE.start_parse_expression_list_~str#1.offset|) .cse7) (and (let ((.cse9 (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (.cse8 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (and (< 0 .cse2) (= (select .cse8 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34)) (and (<= 0 .cse2) (not .cse9)) (let ((.cse10 (select .cse8 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse10)) (not (= 32 .cse10)) .cse9 (not (= 34 .cse10)))))) (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) .cse0 (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) .cse1 (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) .cse3 .cse4 .cse5 (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) .cse6 .cse7))) [2022-10-17 17:22:51,506 INFO L899 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2022-10-17 17:22:51,506 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-10-17 17:22:51,507 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1))) (and (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.base| |ULTIMATE.start_r_strncpy_#in~dest#1.base|) (= |ULTIMATE.start_r_strncpy_~src#1.offset| |ULTIMATE.start_r_strncpy_#in~src#1.offset|) (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (= (+ |ULTIMATE.start_r_strncpy_#in~n#1| |ULTIMATE.start_parse_expression_list_~start~0#1|) (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~j~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (< |ULTIMATE.start_parse_expression_list_~j~0#1| .cse0) 1 0)) (= |ULTIMATE.start_parse_expression_list_~str#1.base| |ULTIMATE.start_r_strncpy_#in~src#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|) |ULTIMATE.start_r_strncpy_#in~src#1.offset|) (= |ULTIMATE.start_r_strncpy_~n#1| |ULTIMATE.start_r_strncpy_#in~n#1|) (= |ULTIMATE.start_r_strncpy_~dest#1.offset| |ULTIMATE.start_r_strncpy_#in~dest#1.offset|) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (let ((.cse1 (select .cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse1)) (not (= 32 .cse1)) (not (= 34 .cse1)))) (not (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (= (select .cse2 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34))) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| |ULTIMATE.start_r_strncpy_#in~dest#1.offset|) (= |ULTIMATE.start_r_strncpy_~dest#1.base| |ULTIMATE.start_r_strncpy_#in~dest#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_r_strncpy_#in~src#1.base| |ULTIMATE.start_r_strncpy_~src#1.base|) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (not (<= .cse0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (= |#NULL.base| 0))) [2022-10-17 17:22:51,507 INFO L895 garLoopResultBuilder]: At program point L73(lines 73 75) the Hoare annotation is: (and (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_parse_expression_list_~start~0#1| |ULTIMATE.start_parse_expression_list_~j~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (let ((.cse1 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (let ((.cse0 (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse0)) (not (= 32 .cse0)) (not (= 34 .cse0)))) (not (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (= (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34))) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-10-17 17:22:51,508 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2022-10-17 17:22:51,508 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-10-17 17:22:51,508 INFO L895 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-10-17 17:22:51,508 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-10-17 17:22:51,508 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2022-10-17 17:22:51,509 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:22:51,509 INFO L899 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2022-10-17 17:22:51,509 INFO L895 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: (and (let ((.cse0 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| 1)) (.cse2 (< 0 |ULTIMATE.start_parse_expression_list_~j~0#1|)) (.cse1 (select |#memory_int| |ULTIMATE.start_parse_expression_list_~str#1.base|))) (or (and (< 0 .cse0) (= (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset| 1)) 34)) (and (<= 0 .cse0) (not .cse2)) (let ((.cse3 (select .cse1 (+ |ULTIMATE.start_parse_expression_list_~j~0#1| |ULTIMATE.start_parse_expression_list_~str#1.offset|)))) (and (not (= 9 .cse3)) (not (= 32 .cse3)) .cse2 (not (= 34 .cse3)))))) (<= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str#1.offset|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~str#1.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 8 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|) (<= 0 |ULTIMATE.start_parse_expression_list_~start~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-10-17 17:22:51,509 INFO L899 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2022-10-17 17:22:51,513 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-10-17 17:22:51,514 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:22:51,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:22:51 BoogieIcfgContainer [2022-10-17 17:22:51,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:22:51,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:22:51,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:22:51,560 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:22:51,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:31" (3/4) ... [2022-10-17 17:22:51,563 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:22:51,573 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-10-17 17:22:51,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-10-17 17:22:51,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:22:51,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:22:51,603 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((str2 == dest && src == src) && str <= 0) && \old(n) + start == j + 1) && 0 <= str2) && 0 <= A) && start <= j) && \old(cond) == (if j < start + 1 then 1 else 0)) && str == src) && 0 <= str) && 0 <= str) && 0 <= str) && start + str == src) && n == \old(n)) && dest == dest) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || !(0 < j)) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && str2 == dest) && dest == dest) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && cond == \old(cond)) && #NULL == 0) && src == src) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && !(start + 1 <= j)) && #NULL == 0 [2022-10-17 17:22:51,622 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:22:51,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:22:51,623 INFO L158 Benchmark]: Toolchain (without parser) took 21562.88ms. Allocated memory was 96.5MB in the beginning and 192.9MB in the end (delta: 96.5MB). Free memory was 55.9MB in the beginning and 114.5MB in the end (delta: -58.6MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2022-10-17 17:22:51,624 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:22:51,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.53ms. Allocated memory is still 96.5MB. Free memory was 55.7MB in the beginning and 70.5MB in the end (delta: -14.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:22:51,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.26ms. Allocated memory is still 96.5MB. Free memory was 70.5MB in the beginning and 68.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:22:51,625 INFO L158 Benchmark]: Boogie Preprocessor took 56.41ms. Allocated memory is still 96.5MB. Free memory was 68.7MB in the beginning and 67.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:22:51,625 INFO L158 Benchmark]: RCFGBuilder took 965.10ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 47.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-10-17 17:22:51,626 INFO L158 Benchmark]: TraceAbstraction took 19944.05ms. Allocated memory was 96.5MB in the beginning and 192.9MB in the end (delta: 96.5MB). Free memory was 46.4MB in the beginning and 118.7MB in the end (delta: -72.3MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. [2022-10-17 17:22:51,626 INFO L158 Benchmark]: Witness Printer took 62.72ms. Allocated memory is still 192.9MB. Free memory was 118.7MB in the beginning and 114.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:22:51,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 469.53ms. Allocated memory is still 96.5MB. Free memory was 55.7MB in the beginning and 70.5MB in the end (delta: -14.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.26ms. Allocated memory is still 96.5MB. Free memory was 70.5MB in the beginning and 68.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.41ms. Allocated memory is still 96.5MB. Free memory was 68.7MB in the beginning and 67.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 965.10ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 47.0MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 19944.05ms. Allocated memory was 96.5MB in the beginning and 192.9MB in the end (delta: 96.5MB). Free memory was 46.4MB in the beginning and 118.7MB in the end (delta: -72.3MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. * Witness Printer took 62.72ms. Allocated memory is still 192.9MB. Free memory was 118.7MB in the beginning and 114.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 195 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 170 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 864 IncrementalHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 33 mSDtfsCounter, 864 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 224 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 619 HoareAnnotationTreeSize, 7 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3634 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 685 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 48/63 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: OVERALL_TIME: 4.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 89, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 157, TOOLS_POST_TIME: 3.9s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 157, TOOLS_QUANTIFIERELIM_TIME: 3.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 317, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 14, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME: 0.3s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 89, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 13, LOOP_SUMMARIZER_CACHE_MISSES: 13, LOOP_SUMMARIZER_OVERALL_TIME: 2.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 1655, DAG_COMPRESSION_RETAINED_NODES: 256, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: (((((((((((((((str <= 0 && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= j + 1) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: ((((((((((((((((((1 == \valid[str2] && unknown-#memory_int-unknown[A][A + 8] == 0) && start == 0) && 0 <= A) && unknown-#StackHeapBarrier-unknown < str2) && str == A) && i + 1 == 0) && !(str == 0)) && A == 0) && str == str) && j + 1 == 0) && A == str) && 2 == unknown-#length-unknown[str2]) && str2 == 0) && 8 <= i) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && str == str) && #NULL == 0) || (((((((((((((((((((0 < j + 1 && unknown-#memory_int-unknown[str][j + str + 1] == 34) || (0 <= j + 1 && !(0 < j))) || (((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && 0 < j) && !(34 == unknown-#memory_int-unknown[str][j + str]))) && str <= 0) && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: ((((((((((((((((str <= 0 && 0 <= str2) && 0 <= A) && start <= j) && 0 <= str) && 0 <= str) && 0 <= str) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || !(0 < j)) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((((((((((((((((((0 < j + 1 && unknown-#memory_int-unknown[str][j + str + 1] == 34) || (0 <= j + 1 && !(0 < j))) || (((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && 0 < j) && !(34 == unknown-#memory_int-unknown[str][j + str]))) && str <= 0) && 0 <= str2) && 0 <= A) && 0 <= str) && 0 <= str) && 0 <= str) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && #NULL == 0) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((str2 == dest && src == src) && str <= 0) && \old(n) + start == j + 1) && 0 <= str2) && 0 <= A) && start <= j) && \old(cond) == (if j < start + 1 then 1 else 0)) && str == src) && 0 <= str) && 0 <= str) && 0 <= str) && start + str == src) && n == \old(n)) && dest == dest) && ((((!(9 == unknown-#memory_int-unknown[str][j + str]) && !(32 == unknown-#memory_int-unknown[str][j + str])) && !(34 == unknown-#memory_int-unknown[str][j + str])) || !(0 < j)) || unknown-#memory_int-unknown[str][j + str + 1] == 34)) && str2 == dest) && dest == dest) && A == 0) && 0 <= str) && str2 == 0) && 8 <= i) && cond == \old(cond)) && #NULL == 0) && src == src) && str <= 0) && 0 <= i) && 0 <= start) && 0 <= unknown-#StackHeapBarrier-unknown) && !(start + 1 <= j)) && #NULL == 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((0 <= i && 0 <= A) && A == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-10-17 17:22:51,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacde224-1b48-454f-b79b-b816eddeea5d/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE