./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d9847fe213bf8df5d23c53d2bc8b53fb384c85820b87c09591484702dabefc3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:05:57,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:05:57,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:05:57,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:05:57,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:05:57,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:05:57,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:05:57,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:05:57,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:05:57,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:05:57,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:05:57,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:05:57,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:05:57,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:05:57,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:05:57,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:05:57,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:05:57,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:05:57,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:05:57,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:05:57,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:05:57,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:05:57,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:05:57,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:05:57,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:05:57,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:05:57,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:05:57,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:05:57,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:05:57,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:05:57,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:05:57,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:05:57,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:05:57,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:05:57,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:05:57,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:05:57,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:05:57,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:05:57,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:05:57,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:05:57,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:05:57,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:05:57,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:05:57,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:05:57,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:05:57,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:05:57,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:05:57,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:05:57,643 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:05:57,643 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:05:57,643 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:05:57,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:05:57,645 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:05:57,645 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:05:57,645 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:05:57,645 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:05:57,646 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:05:57,646 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:05:57,646 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:05:57,646 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:05:57,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:05:57,647 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:05:57,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:05:57,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:05:57,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:05:57,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:05:57,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:05:57,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:05:57,649 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:05:57,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:05:57,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:05:57,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:05:57,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:05:57,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:05:57,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:05:57,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:05:57,651 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:05:57,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:05:57,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:05:57,652 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:05:57,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:05:57,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:05:57,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:05:57,652 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_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d9847fe213bf8df5d23c53d2bc8b53fb384c85820b87c09591484702dabefc3 [2022-11-19 08:05:58,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:05:58,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:05:58,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:05:58,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:05:58,062 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:05:58,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2022-11-19 08:05:58,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/data/5c2f2a5b0/ce24df6c3e6e474197374472f699b1db/FLAG06d7ed506 [2022-11-19 08:05:58,707 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:05:58,708 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2022-11-19 08:05:58,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/data/5c2f2a5b0/ce24df6c3e6e474197374472f699b1db/FLAG06d7ed506 [2022-11-19 08:05:59,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/data/5c2f2a5b0/ce24df6c3e6e474197374472f699b1db [2022-11-19 08:05:59,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:05:59,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:05:59,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:05:59,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:05:59,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:05:59,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f470010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59, skipping insertion in model container [2022-11-19 08:05:59,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:05:59,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:05:59,407 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c[489,502] [2022-11-19 08:05:59,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:05:59,454 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:05:59,470 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c[489,502] [2022-11-19 08:05:59,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:05:59,508 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:05:59,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59 WrapperNode [2022-11-19 08:05:59,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:05:59,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:05:59,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:05:59,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:05:59,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,553 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-19 08:05:59,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:05:59,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:05:59,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:05:59,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:05:59,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:05:59,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:05:59,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:05:59,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:05:59,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2022-11-19 08:05:59,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:05:59,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:59,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:05:59,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:05:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:05:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:05:59,668 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:05:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:05:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:05:59,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:05:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 08:05:59,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 08:05:59,762 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:05:59,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:06:00,008 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:06:00,086 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:06:00,086 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:06:00,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:00 BoogieIcfgContainer [2022-11-19 08:06:00,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:06:00,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:06:00,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:06:00,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:06:00,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:59" (1/3) ... [2022-11-19 08:06:00,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b14fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:00, skipping insertion in model container [2022-11-19 08:06:00,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (2/3) ... [2022-11-19 08:06:00,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b14fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:00, skipping insertion in model container [2022-11-19 08:06:00,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:00" (3/3) ... [2022-11-19 08:06:00,103 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound10.c [2022-11-19 08:06:00,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:06:00,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:06:00,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:06:00,190 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;@28987b51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:06:00,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:06:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 08:06:00,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:06:00,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:00,205 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:00,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:00,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:00,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2040384688, now seen corresponding path program 1 times [2022-11-19 08:06:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:00,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418617417] [2022-11-19 08:06:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:00,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:00,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176290152] [2022-11-19 08:06:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:00,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:00,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:00,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:00,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:06:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:00,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 08:06:00,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:06:00,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:06:00,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418617417] [2022-11-19 08:06:00,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:00,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176290152] [2022-11-19 08:06:00,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176290152] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:06:00,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:06:00,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-19 08:06:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096780752] [2022-11-19 08:06:00,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:00,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:06:00,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:00,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:06:00,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:06:00,983 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 08:06:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:01,077 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2022-11-19 08:06:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:06:01,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-19 08:06:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:01,094 INFO L225 Difference]: With dead ends: 49 [2022-11-19 08:06:01,094 INFO L226 Difference]: Without dead ends: 30 [2022-11-19 08:06:01,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:06:01,102 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:01,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-11-19 08:06:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-19 08:06:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-19 08:06:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 08:06:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-19 08:06:01,153 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 20 [2022-11-19 08:06:01,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:01,154 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-19 08:06:01,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 08:06:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-19 08:06:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:06:01,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:01,156 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:01,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:01,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 08:06:01,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1970941867, now seen corresponding path program 1 times [2022-11-19 08:06:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:01,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720248567] [2022-11-19 08:06:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:06:01,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:01,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720248567] [2022-11-19 08:06:01,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720248567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:01,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:01,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:06:01,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249459608] [2022-11-19 08:06:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:06:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:06:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:06:01,489 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 08:06:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:01,518 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2022-11-19 08:06:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:06:01,520 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2022-11-19 08:06:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:01,523 INFO L225 Difference]: With dead ends: 40 [2022-11-19 08:06:01,523 INFO L226 Difference]: Without dead ends: 30 [2022-11-19 08:06:01,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:06:01,526 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:01,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:06:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-19 08:06:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-19 08:06:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 08:06:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-11-19 08:06:01,549 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 20 [2022-11-19 08:06:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:01,551 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-11-19 08:06:01,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 08:06:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-11-19 08:06:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 08:06:01,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:01,554 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:01,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:06:01,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:01,557 INFO L85 PathProgramCache]: Analyzing trace with hash -879048764, now seen corresponding path program 1 times [2022-11-19 08:06:01,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:01,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483363517] [2022-11-19 08:06:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:01,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:01,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25759702] [2022-11-19 08:06:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:01,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:01,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:01,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:01,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:06:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:01,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 08:06:01,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 08:06:01,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 08:06:02,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:02,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483363517] [2022-11-19 08:06:02,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:02,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25759702] [2022-11-19 08:06:02,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25759702] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:06:02,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:06:02,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-19 08:06:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842554385] [2022-11-19 08:06:02,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:02,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:06:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:06:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:06:02,088 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:06:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:02,209 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2022-11-19 08:06:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:06:02,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2022-11-19 08:06:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:02,211 INFO L225 Difference]: With dead ends: 43 [2022-11-19 08:06:02,212 INFO L226 Difference]: Without dead ends: 41 [2022-11-19 08:06:02,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:06:02,213 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:02,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:06:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-19 08:06:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2022-11-19 08:06:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 08:06:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-11-19 08:06:02,226 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 25 [2022-11-19 08:06:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:02,227 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-11-19 08:06:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 08:06:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-11-19 08:06:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 08:06:02,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:02,228 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:02,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 08:06:02,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:02,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:02,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1554903952, now seen corresponding path program 1 times [2022-11-19 08:06:02,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:02,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151452783] [2022-11-19 08:06:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:02,453 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:02,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145504684] [2022-11-19 08:06:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:02,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:02,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:02,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:02,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:06:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:02,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 08:06:02,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 08:06:02,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:02,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:02,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151452783] [2022-11-19 08:06:02,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:02,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145504684] [2022-11-19 08:06:02,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145504684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:06:02,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2073111430] [2022-11-19 08:06:02,933 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-19 08:06:02,933 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:02,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:02,942 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:02,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:03,837 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-19 08:06:03,850 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-19 08:06:03,879 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:05,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2073111430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:05,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:06:05,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 21 [2022-11-19 08:06:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693294924] [2022-11-19 08:06:05,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:05,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 08:06:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 08:06:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:06:05,237 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-19 08:06:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:05,591 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2022-11-19 08:06:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:06:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-11-19 08:06:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:05,594 INFO L225 Difference]: With dead ends: 47 [2022-11-19 08:06:05,594 INFO L226 Difference]: Without dead ends: 43 [2022-11-19 08:06:05,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:06:05,596 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:05,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 41 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:06:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-19 08:06:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-19 08:06:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 08:06:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-11-19 08:06:05,623 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 30 [2022-11-19 08:06:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:05,624 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-11-19 08:06:05,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-19 08:06:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-11-19 08:06:05,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 08:06:05,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:05,626 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:05,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:05,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:05,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:05,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:05,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1140127173, now seen corresponding path program 1 times [2022-11-19 08:06:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:05,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444819016] [2022-11-19 08:06:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:05,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:05,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27180038] [2022-11-19 08:06:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:05,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:05,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:05,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:05,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:06:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:05,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:06:05,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:06:05,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:06:05,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:05,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444819016] [2022-11-19 08:06:05,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:05,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27180038] [2022-11-19 08:06:05,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27180038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:05,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:05,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:06:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082910451] [2022-11-19 08:06:05,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:05,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:06:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:06:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:06:05,954 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 08:06:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:06,018 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-11-19 08:06:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:06:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 36 [2022-11-19 08:06:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:06,020 INFO L225 Difference]: With dead ends: 49 [2022-11-19 08:06:06,020 INFO L226 Difference]: Without dead ends: 47 [2022-11-19 08:06:06,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:06:06,022 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:06,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:06:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-19 08:06:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-19 08:06:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 08:06:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-11-19 08:06:06,065 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 36 [2022-11-19 08:06:06,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:06,065 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-11-19 08:06:06,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 08:06:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-11-19 08:06:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 08:06:06,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:06,067 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:06,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:06,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:06,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:06,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1417905632, now seen corresponding path program 1 times [2022-11-19 08:06:06,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:06,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468729777] [2022-11-19 08:06:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:06,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:06,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949243884] [2022-11-19 08:06:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:06,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:06,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:06,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:06:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:06,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 08:06:06,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 08:06:06,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:06:06,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:06,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468729777] [2022-11-19 08:06:06,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:06,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949243884] [2022-11-19 08:06:06,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949243884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:06,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1664975695] [2022-11-19 08:06:06,854 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-19 08:06:06,854 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:06,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:06,855 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:06,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:10,797 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-19 08:06:10,802 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-19 08:06:10,823 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:11,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1430#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:11,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:11,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:11,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2022-11-19 08:06:11,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115765683] [2022-11-19 08:06:11,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:11,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:06:11,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:06:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2022-11-19 08:06:11,980 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 08:06:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:12,487 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2022-11-19 08:06:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 08:06:12,489 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 37 [2022-11-19 08:06:12,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:12,490 INFO L225 Difference]: With dead ends: 62 [2022-11-19 08:06:12,490 INFO L226 Difference]: Without dead ends: 60 [2022-11-19 08:06:12,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-19 08:06:12,491 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:12,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 08:06:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-19 08:06:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-11-19 08:06:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 08:06:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-11-19 08:06:12,512 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 37 [2022-11-19 08:06:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:12,513 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-11-19 08:06:12,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 08:06:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-11-19 08:06:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 08:06:12,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:12,515 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:12,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:12,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 08:06:12,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1922069073, now seen corresponding path program 1 times [2022-11-19 08:06:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:12,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136080840] [2022-11-19 08:06:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:12,733 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:12,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577222391] [2022-11-19 08:06:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:12,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:12,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:12,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:12,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:06:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:12,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:06:12,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:06:12,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:06:13,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:13,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136080840] [2022-11-19 08:06:13,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:13,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577222391] [2022-11-19 08:06:13,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577222391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:13,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1900681819] [2022-11-19 08:06:13,076 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-19 08:06:13,076 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:13,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:13,077 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:13,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:13,756 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-19 08:06:13,767 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-19 08:06:13,785 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1900681819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:15,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:15,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 8] total 24 [2022-11-19 08:06:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414525110] [2022-11-19 08:06:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:15,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 08:06:15,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 08:06:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:06:15,496 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-19 08:06:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:15,933 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-11-19 08:06:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 08:06:15,934 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 41 [2022-11-19 08:06:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:15,935 INFO L225 Difference]: With dead ends: 61 [2022-11-19 08:06:15,935 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 08:06:15,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:06:15,936 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:15,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 39 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 08:06:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 08:06:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-19 08:06:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 08:06:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-11-19 08:06:15,954 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 41 [2022-11-19 08:06:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:15,955 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-11-19 08:06:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-19 08:06:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-11-19 08:06:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 08:06:15,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:15,956 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:15,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 08:06:16,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:16,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:16,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1662237964, now seen corresponding path program 2 times [2022-11-19 08:06:16,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:16,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100881043] [2022-11-19 08:06:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:16,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:16,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:16,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185377653] [2022-11-19 08:06:16,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:06:16,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:16,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:16,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:06:16,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:06:16,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:06:16,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 08:06:16,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 08:06:16,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 08:06:17,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:17,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100881043] [2022-11-19 08:06:17,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:17,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185377653] [2022-11-19 08:06:17,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185377653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:17,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1232718916] [2022-11-19 08:06:17,011 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-19 08:06:17,012 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:17,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:17,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:17,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:20,527 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-19 08:06:20,532 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-19 08:06:20,548 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:21,750 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2301#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:21,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:21,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:21,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2022-11-19 08:06:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923346984] [2022-11-19 08:06:21,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 08:06:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 08:06:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-11-19 08:06:21,753 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-19 08:06:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:24,286 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2022-11-19 08:06:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 08:06:24,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 42 [2022-11-19 08:06:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:24,289 INFO L225 Difference]: With dead ends: 73 [2022-11-19 08:06:24,289 INFO L226 Difference]: Without dead ends: 71 [2022-11-19 08:06:24,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-11-19 08:06:24,290 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:24,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 08:06:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-19 08:06:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-11-19 08:06:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 08:06:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2022-11-19 08:06:24,326 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 42 [2022-11-19 08:06:24,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:24,326 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2022-11-19 08:06:24,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-19 08:06:24,327 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2022-11-19 08:06:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 08:06:24,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:24,328 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:24,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 08:06:24,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:24,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash -335940000, now seen corresponding path program 3 times [2022-11-19 08:06:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:24,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192729283] [2022-11-19 08:06:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:24,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:24,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968119938] [2022-11-19 08:06:24,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:06:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:24,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:24,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:24,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:06:24,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:06:24,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:06:24,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 08:06:24,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 08:06:25,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:06:26,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192729283] [2022-11-19 08:06:26,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:26,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968119938] [2022-11-19 08:06:26,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968119938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:26,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [525406250] [2022-11-19 08:06:26,062 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-19 08:06:26,062 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:26,063 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:26,063 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:26,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:29,477 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-19 08:06:29,481 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-19 08:06:29,496 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:31,001 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2821#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:31,001 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:31,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:31,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-11-19 08:06:31,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524933312] [2022-11-19 08:06:31,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:31,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 08:06:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 08:06:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-11-19 08:06:31,003 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 18 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-19 08:06:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:32,688 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2022-11-19 08:06:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 08:06:32,688 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) Word has length 47 [2022-11-19 08:06:32,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:32,690 INFO L225 Difference]: With dead ends: 75 [2022-11-19 08:06:32,690 INFO L226 Difference]: Without dead ends: 69 [2022-11-19 08:06:32,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 102 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 08:06:32,692 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:32,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 65 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 08:06:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-19 08:06:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-11-19 08:06:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 41 states have internal predecessors, (42), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-19 08:06:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-11-19 08:06:32,720 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 47 [2022-11-19 08:06:32,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:32,720 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-11-19 08:06:32,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-19 08:06:32,721 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-11-19 08:06:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 08:06:32,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:32,722 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:32,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:32,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:32,927 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1514449119, now seen corresponding path program 1 times [2022-11-19 08:06:32,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:32,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332963497] [2022-11-19 08:06:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:32,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:32,938 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:32,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207252668] [2022-11-19 08:06:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:32,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:32,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:32,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:32,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:06:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:33,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:06:33,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:06:33,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:06:33,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:33,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332963497] [2022-11-19 08:06:33,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:33,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207252668] [2022-11-19 08:06:33,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207252668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:33,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1489037897] [2022-11-19 08:06:33,261 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-19 08:06:33,261 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:33,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:33,262 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:33,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:35,833 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 23 for LOIs [2022-11-19 08:06:35,851 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-19 08:06:35,867 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:37,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3410#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:37,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:37,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:37,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-19 08:06:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780849517] [2022-11-19 08:06:37,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:37,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:06:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:06:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-11-19 08:06:37,386 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:06:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:37,592 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-11-19 08:06:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:06:37,593 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 58 [2022-11-19 08:06:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:37,594 INFO L225 Difference]: With dead ends: 73 [2022-11-19 08:06:37,594 INFO L226 Difference]: Without dead ends: 61 [2022-11-19 08:06:37,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 137 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2022-11-19 08:06:37,595 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:37,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 68 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:06:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-19 08:06:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-19 08:06:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 08:06:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-11-19 08:06:37,613 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 58 [2022-11-19 08:06:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:37,614 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-11-19 08:06:37,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 08:06:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-11-19 08:06:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 08:06:37,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:37,616 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:06:37,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-19 08:06:37,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 08:06:37,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:06:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:37,822 INFO L85 PathProgramCache]: Analyzing trace with hash 345062644, now seen corresponding path program 4 times [2022-11-19 08:06:37,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:37,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846619582] [2022-11-19 08:06:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:37,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:37,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:06:37,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78619034] [2022-11-19 08:06:37,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:06:37,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:37,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:06:37,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:06:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 08:06:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:37,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-19 08:06:37,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:06:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 62 proven. 58 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-19 08:06:41,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 73 proven. 8 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-19 08:06:41,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:41,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846619582] [2022-11-19 08:06:41,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:06:41,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78619034] [2022-11-19 08:06:41,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78619034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:41,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2021414732] [2022-11-19 08:06:41,677 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-19 08:06:41,677 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:41,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:06:41,677 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:06:41,677 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:06:44,447 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-19 08:06:44,452 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-19 08:06:44,467 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:06:45,823 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4090#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:06:45,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:06:45,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:06:45,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 18 [2022-11-19 08:06:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732381299] [2022-11-19 08:06:45,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:45,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 08:06:45,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 08:06:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-11-19 08:06:45,825 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-19 08:06:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:49,696 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2022-11-19 08:06:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 08:06:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) Word has length 76 [2022-11-19 08:06:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:49,697 INFO L225 Difference]: With dead ends: 76 [2022-11-19 08:06:49,697 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:06:49,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 191 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 08:06:49,699 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:49,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 97 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 08:06:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:06:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:06:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:06:49,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-11-19 08:06:49,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:49,700 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:06:49,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 10 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-19 08:06:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:06:49,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:06:49,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:06:49,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:49,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:49,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:06:57,552 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 129 DAG size of output: 73 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:07:10,552 WARN L233 SmtUtils]: Spent 13.00s on a formula simplification. DAG size of input: 121 DAG size of output: 88 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:07:24,384 WARN L233 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 121 DAG size of output: 88 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-19 08:07:29,467 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,467 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:07:29,468 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10)) 1 0) 0)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,468 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse2 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse3 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (select |#valid| 1) 1)) (.cse8 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse18 0) 48)) (.cse12 (= 10 (select |#length| 2))) (.cse13 (= (select .cse18 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 (not (= 0 (ite .cse1 1 0))) .cse2 (= |ULTIMATE.start_main_~p~0#1| 1) .cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse6) 1 0) 0)) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1) .cse14 .cse15) (let ((.cse16 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse17 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse2 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse3 .cse4 (= (+ .cse16 .cse17) |ULTIMATE.start_main_~b~0#1|) .cse5 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse16 .cse17)) .cse6 .cse1 .cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))))) [2022-11-19 08:07:29,468 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,469 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-11-19 08:07:29,469 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10)) 1 0) 0)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,469 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10)) 1 0) 0)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,469 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 08:07:29,470 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-19 08:07:29,470 INFO L902 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: true [2022-11-19 08:07:29,470 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,470 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,471 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse2 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse3 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (select |#valid| 1) 1)) (.cse8 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse18 0) 48)) (.cse12 (= 10 (select |#length| 2))) (.cse13 (= (select .cse18 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0))) (or (and .cse0 (not (= 0 (ite .cse1 1 0))) .cse2 (= |ULTIMATE.start_main_~p~0#1| 1) .cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse6) 1 0) 0)) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1) .cse14 .cse15) (let ((.cse16 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse17 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse2 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse3 .cse4 (= (+ .cse16 .cse17) |ULTIMATE.start_main_~b~0#1|) .cse5 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse16 .cse17)) .cse6 .cse1 .cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))))) [2022-11-19 08:07:29,471 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,471 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-19 08:07:29,471 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10)) 1 0) 0)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,472 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 08:07:29,472 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-19 08:07:29,472 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-19 08:07:29,472 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-19 08:07:29,472 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-19 08:07:29,473 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-19 08:07:29,473 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-19 08:07:29,473 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-19 08:07:29,473 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-19 08:07:29,476 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:29,478 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:07:29,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:07:29 BoogieIcfgContainer [2022-11-19 08:07:29,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:07:29,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:07:29,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:07:29,497 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:07:29,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:00" (3/4) ... [2022-11-19 08:07:29,501 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:07:29,507 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-19 08:07:29,507 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-19 08:07:29,513 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-19 08:07:29,514 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 08:07:29,514 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 08:07:29,515 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:07:29,565 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:07:29,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:07:29,566 INFO L158 Benchmark]: Toolchain (without parser) took 90496.18ms. Allocated memory was 132.1MB in the beginning and 448.8MB in the end (delta: 316.7MB). Free memory was 99.1MB in the beginning and 300.0MB in the end (delta: -200.9MB). Peak memory consumption was 115.7MB. Max. memory is 16.1GB. [2022-11-19 08:07:29,566 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 79.7MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:07:29,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.51ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 108.4MB in the end (delta: -9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:07:29,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.54ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 106.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:07:29,568 INFO L158 Benchmark]: Boogie Preprocessor took 36.44ms. Allocated memory is still 132.1MB. Free memory was 106.8MB in the beginning and 105.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:07:29,569 INFO L158 Benchmark]: RCFGBuilder took 498.46ms. Allocated memory is still 132.1MB. Free memory was 105.2MB in the beginning and 92.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:07:29,569 INFO L158 Benchmark]: TraceAbstraction took 89401.81ms. Allocated memory was 132.1MB in the beginning and 448.8MB in the end (delta: 316.7MB). Free memory was 91.7MB in the beginning and 303.2MB in the end (delta: -211.5MB). Peak memory consumption was 255.0MB. Max. memory is 16.1GB. [2022-11-19 08:07:29,569 INFO L158 Benchmark]: Witness Printer took 68.51ms. Allocated memory is still 448.8MB. Free memory was 303.2MB in the beginning and 300.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:07:29,575 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 79.7MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.51ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 108.4MB in the end (delta: -9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.54ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 106.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.44ms. Allocated memory is still 132.1MB. Free memory was 106.8MB in the beginning and 105.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.46ms. Allocated memory is still 132.1MB. Free memory was 105.2MB in the beginning and 92.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 89401.81ms. Allocated memory was 132.1MB in the beginning and 448.8MB in the end (delta: 316.7MB). Free memory was 91.7MB in the beginning and 303.2MB in the end (delta: -211.5MB). Peak memory consumption was 255.0MB. Max. memory is 16.1GB. * Witness Printer took 68.51ms. Allocated memory is still 448.8MB. Free memory was 303.2MB in the beginning and 300.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 89.3s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 39.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 262 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 896 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 619 mSDsCounter, 301 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1909 IncrementalHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 301 mSolverCounterUnsat, 277 mSDtfsCounter, 1909 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1105 GetRequests, 840 SyntacticMatches, 51 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 53 PreInvPairs, 84 NumberOfFragments, 1553 HoareAnnotationTreeSize, 53 FomulaSimplifications, 332 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 19822 FormulaSimplificationTreeSizeReductionInter, 39.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 432 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 759 ConstructedInterpolants, 2 QuantifiedInterpolants, 4639 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1161 ConjunctsInSsa, 257 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 1048/1194 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: 1.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 49, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 27, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 44, TOOLS_POST_CALL_TIME: 0.7s, TOOLS_POST_RETURN_APPLICATIONS: 28, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 99, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 122, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 54, DOMAIN_JOIN_TIME: 0.5s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 49, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 28, CALL_SUMMARIZER_CACHE_MISSES: 4, 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: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 564, DAG_COMPRESSION_RETAINED_NODES: 130, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && p * s == q * r + 1) && !((if y <= 10 && 0 <= y then 1 else 0) == 0)) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && !((if 0 <= x && x <= 10 then 1 else 0) == 0)) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && 10 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:07:29,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14319d7d-4148-478e-b8fe-423f1f1ea933/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE